python: Fix license.
python: Fix license.

Other parts of the build system are also LGPLed.

* lang/python/Makefile.am: Fix license.

Signed-off-by: Justus Winter <4d1bd7a5ca1cd26bee0df05b6801a6ce9a22196e@g10code.com>

gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme