Changes

Adding gcc linker cfg: '-static-libgcc' for all def. build platforms:

- linker.cfg.linux
- linker.cfg.linux.x86
- linker.cfg.linux.amd64
- linker.cfg.linux.armv6
- linker.cfg.solaris
- linker.cfg.solaris.spacv9
- linker.cfg.solaris.amd64
- linker.cfg.macosx
- linker.cfg.linux64.mingw64
- linker.cfg.linux64.mingw32
- linker.cfg.win32.mingw32
- linker.cfg.win32.mingw64

- android.armv6
- android.armv7
- linux.armv6
- linux.armv6hf

These flags shall now go through autobuild and results will be validated,
i.e.:
  - working
  - memory footprint