Updated drivers signature for Windows
Merge tag '1.0.5-r2'
Updated revisions log
Signed drivers for Windows 8.1
Merge tag '1.0.5-r2' into HEAD
Compile with -x assembler-with-cpp instead of -assembler-with-cpp.

- Newer avr-gcc doesn't use -assembler-with-cpp, but
  uses -x assembler-with-cpp. This works with older compilers as well.
Merge pull request #1814 from HeMan/master

Update for newer avr-gcc. (solves https://github.com/arduino/Arduino/issues/1807)
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Compile with -x assembler-with-cpp instead of -assembler-with-cpp.
  Signed drivers for Windows 8.1
  Updated revisions log
  Updated drivers signature for Windows