parrot_config RFC

[James E Keenan]

Since jhorwitz asked me about this just now at YAPC|10 Parrot BOF, a 
data point:

./parrot_config --dump | grep '$('
cat => '$(PERL) -MExtUtils::Command -e cat'
chmod => '$(PERL) -MExtUtils::Command -e ExtUtils::Command::chmod'
cp => '$(PERL) -MExtUtils::Command -e cp'
libparrot => '$(LIBPARROT_SHARED)'
libparrot_shared => 'libparrot$(SHARE_EXT).$(SOVERSION)'
libparrot_shared_alias => 'libparrot$(SHARE_EXT)'
libparrot_soname => '-Wl,-soname=libparrot$(SHARE_EXT).$(SOVERSION)'
mkpath => '$(PERL) -MExtUtils::Command -e mkpath'
mv => '$(PERL) -MExtUtils::Command -e mv'
rm_f => '$(PERL) -MExtUtils::Command -e rm_f'
rm_rf => '$(PERL) -MExtUtils::Command -e rm_rf'
touch => '$(PERL) -MExtUtils::Command -e touch'