update rtems-tools
rtems4.11: Use rtems-tools HEAD for 4.11 until stable.
sb: FreeBSD uses clang for cc on version 10 and later.
bare: Update qemu to the latest version.

Add support to build on FreeBSD 10.

The CAN support is broken on a recent qemu and needs updating so has
been removed from the build.
Update newlib to 20 Nov 2014 and hash de616601501c4f82968683e80c112604a2d40222

This picks up at least these RTEMS Project patches:

  + Joel Sherrill to ensure the PRIxxPTR defines are correct on all targets.
  + Sebastian Huber NGROUPS adjusted to have even value.
4.11/rtems-nios2.bset: Drop patch adding RTEMS target
Merge remote-tracking branch 'upstream/master' into beagle