- Startup is much faster
- Added test for compiler wrapper parsing.
- Removed old compilation module that had to be imported by old cc.
- Removed cc from python version checks now that it's bash.
- Spack needed symlinks in env for fortran compilers.
- 'fc' is a bash bulitin, so can't use it for fortran compiler.
- switched to 'f90' for this.
- mpich 3 builds with fortran now.
- enabled shared libs in mpich package
- no more need for compiler python files.
- Default compilers are found in user's environment and added
to ~/.spackconfig automatically
- User can add new compilers by editing configuration file
- Consolidated build environment stuff from package.py into
build_environment.py
- package.py calls build_environment.py functions just before calling
install(), in do_install()
- Organization is better b/c SPACK_xxxx environment variables are now
in build_environment, the only place they're used. Were previously
cluttering globals.py.
