vchoi_fork

[svn-r21275] Description: Changed the --enable-fortran2003 behavior to:

1) --enable-fortran2003 will enable only F2003 features. It is not a replacement for --enable-fortran. If compiler is not F2003 compliant configure should fail.
2) if --enable-fortran2003 is specified with out --enable-fortran configure fails

3) Configure help indicates that --enable-fortran2003 is in addition to --enable-fortran

Updated the version checks of different compilers.

Tested: jam (gcc 4.1 4.6, intel 10.1 11.1 12.0, pgi)