Switch the license of all .h files to GPLv3. Switch the license of all .cc files to GPLv3.
* NEWS: New port to S+core. * MAINTAINERS (Write After Approval, Responsible Maintainers): Add myself. * Makefile.in: Add dependencies for S+core files. * configure.tgt (score*, score-*-*): Add S+core target. * config/score/embed.mt: New file. * score-tdep.c: New file. * score-tdep.h: New file.