doc: Fix a few license headers
* src/GpgmeppConfig-w32.cmake.in.in, src/GpgmeppConfig.cmake.in.in, src/GpgmeppConfigVersion.cmake.in: Fix license headers. * src/trustitem.cpp, src/trustitem.h: Fix project name. * tests/run-getkey.cpp, tests/run-keylist.cpp, tests/run-verify.cpp: Fix license headers.
GPGME++ is published under the LGPL v2.1. Fix license headers of the
cmake files.
The three test programs are published under the GPL v2. Clarify that
the license applies only to those files.