defunct fortran built by default for cross-compiler

[Joern RENNECKE]

When I configure an sh-elf cross tool chain without a specific 
--enable-languages
option (which used to work with gcc 4.2), I get:
The following languages will be built: c,c++,fortran,java,objc
*** This configuration is not supported in the following subdirectories:
     target-libmudflap target-libgomp target-libgloss target-libffi 
target-zlib
target-libjava target-libada gnattools target-boehm-gc
    (Any other directories should still work fine.)

With literally more than ten thousand lines of error messages per 
multilib for
fortran, that makes the test results unreportable.