this follows the license change of the master branches in [43561de]. all
files whose copyright is not my own are originally based on files whose
license has been changed in master.
the expression used for the conversion was:
sed -i -e 's/This program is free software: you can redistribute/This library is free software: you can redistribute/g' -e 's/under the terms of the GNU General Public License as published/under the terms of the GNU Lesser General Public License as published/' -e 's/This program is distributed in the hope that/This library is distributed in the hope that/g' -e 's/You should have received a copy of the GNU General/You should have received a copy of the GNU Lesser General/' -e 's/along with this program. If not/along with this library. If not/' -e 's/GNU General Public License for more details/GNU Lesser General Public License for more details/' */**/efm32/**/*(.)
[43561de] 43561de3297b88d68753cb4625d6dc48bfb43d71
includes minor refactoring in example code and modification of how the
generic and the tinygecko specific vector.h go together (bringing it in
line with stm32/f1's memorymap.h)
