api: fix license headers in MM API

The libmm-glib library, as well as the ModemManager headers installed
as part of the D-Bus service API, have always been LGPLv2+ licensed,
because we want users of the service to rely on them in their own
programs, even if they are proprietary.

Some files had an incorrect GPLv2+ header instead of the LGPLv2+ and
that was confusing. All public headers in the MM API have the correct
license text now.

Signed-off-by: Aleksander Morgado <aleksandermj@chromium.org>

README.md

@@ -61,8 +61,9 @@ and need to add or change some public method, feel free to suggest it!
 
 ## License
 
-The ModemManager and mmcli binaries are both GPLv2+.
+The ModemManager and mmcli binaries are both GPLv2+ (See COPYING).
-The libmm-glib library is LGPLv2+.
+The libmm-glib library and the ModemManager API headers are LGPLv2+ (See
+COPYING.LIB).
 
 ## Code of Conduct
 

include/ModemManager-compat.h

@@ -1,14 +1,21 @@
 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /*
- * This program is free software; you can redistribute it and/or modify
+ * ModemManager Interface Specification
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * GNU General Public License for more details:
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
  *
  * Copyright (C) 2017 Google, Inc.
  */

include/ModemManager-enums.h

@@ -1,14 +1,21 @@
 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /*
- * This program is free software; you can redistribute it and/or modify
+ * ModemManager Interface Specification
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * GNU General Public License for more details:
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
  *
  * Copyright (C) 2011 Red Hat, Inc.
  * Copyright (C) 2011 Google, Inc.

include/ModemManager-errors.h

@@ -1,14 +1,21 @@
 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /*
- * This program is free software; you can redistribute it and/or modify
+ * ModemManager Interface Specification
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * GNU General Public License for more details:
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
  *
  * Copyright (C) 2011 Red Hat, Inc.
  * Copyright (C) 2011 Google, Inc.

include/ModemManager-tags.h

@@ -1,14 +1,21 @@
 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /*
- * This program is free software; you can redistribute it and/or modify
+ * ModemManager Interface Specification
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * GNU General Public License for more details:
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
  *
  * Copyright (C) 2018 Aleksander Morgado <aleksander@aleksander.es>
  */

include/ModemManager-version.h.in

@@ -1,5 +1,7 @@
 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
 /*
+ * ModemManager Interface Specification
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either

include/ModemManager.h

@@ -1,6 +1,5 @@
 /*
  * ModemManager Interface Specification
- * version 1.x
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public