[Fortran-dev] Merge from the trunk

[Tobias Burnus]

Thomas: Please write branch changes not in libgfortran/ChangeLog but in 
libgfortran/ChangeLog.fortran-dev; that avoids merge problems when 
updating from the trunk.

The branch (rev. 186674) now matches the trunk (Rev. 185178->186672). 
Unfortunately, there are still about a dozen failures.

Tobias