Merge pull request #156 from Alexpux/develop

Libgnurx can be compiled in static mode
Merge branch 'master' into develop
Merge pull request #157 from Alexpux/develop

Sync develop with master branch
Merge branch 'master' into develop
Merge pull request #158 from Alexpux/develop

Backport from master branch
Update mpfr to 3.1.2
Remove old MPFR patches
Merge pull request #159 from Alexpux/develop

Update mpfr to 3.1.2
Remove unused patch for GCCBUG 54988
Backport patch from GCCBUG-55171 to GCC-4.7.2
Merge pull request #160 from Alexpux/develop

Backport patch for GCC Bug 55171 to GCC 4.7.2
don't rename host toolchains dirs
Trunk now point to gcc-4.9.0. Create branch for gcc-4.8.x.
Merge commit '7d06232d5ea83c1685cdbca09fc34db666dff936' into develop
Merge pull request #161 from Alexpux/develop

Trunk now point to gcc-4.9.0. Create branch for gcc-4.8.x.
add --booststrap option
fixed gcc source dir name
fix for previous boostrap commit
Update libffi to 3.0.13
Merge commit '7a2ecb343cee69f6264b9cb294472471cdc84e98' into develop