Is updating contrib/gcc desirable?

[Yuri]

Currently the only way how fortran is supported is through lang/gccXX 
ports. They install their own version of libgcc.so, which is 
incompatible with the base. As a result, mix of fortran ports and 
regular C++ ports is broken. This breaks most of science/math software 
on FreeBSD.

Would it be the right way of solving the problem if I submitted an 
update of contrib/gcc and contrib/gcclibs from the gcc-5.3.0 tree? Any 
pitfalls with this?

Additionally, the gcc library libquadmath is required for fortran. I 
think this one can be made into a port.

Yuri