New and improved GPL license detection rules.

Signed-off-by: Philippe Ombredanne <pombredanne@nexb.com>

Author: pombredanne

src/licensedcode/data/rules/gpl-2.0-plus_87.RULE

@@ -0,0 +1,15 @@
+This program is free software; you can redistribute it and/or modify
+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,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+On Debian systems the full text of the GNU General Public
+License can be found in the `/usr/share/common-licenses/GPL-2' file.

src/licensedcode/data/rules/gpl-2.0-plus_87.yml

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+licenses:
+    - gpl-2.0-plus

src/licensedcode/data/rules/gpl-3.0-plus_25.RULE

@@ -0,0 +1,16 @@
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+ .
+ This program 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
+ GNU General Public License for more details.
+ .
+ You should have received a copy of the GNU General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ .
+ On Debian systems the full text of the GNU General Public
+ License can be found in the `/usr/share/common-licenses/GPL-3' file.
+

src/licensedcode/data/rules/gpl-3.0-plus_25.yml

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+licenses:
+    - gpl-3.0-plus