* Ensure Config.pm has correct setting for cc
Run a filter after install so that Config.pm records the compiler that
Spack built the package with. If this isn't done, $Config{cc} will be
set to Spack's cc wrapper script.
* Also patch compilers Config_heavy.pl
This patch sets ld=gcc, which appears to work. I'm not sure if
there's a good way to get at the ld that Spack uses.
* Clean up quoting
* Fix pattern for Config.pm
Does not start at beginning of line...
e3eaba80b1