Parallel ext configuration
ext/configure-ext.mk: configure each directories underneath ext in parallel.
template/exts.mk.tmpl: then collect the results.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57401 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Parallel ext configuration
ext/configure-ext.mk: configure each directories underneath ext
in parallel.
template/exts.mk.tmpl: then collect the results.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57401 b2dd03c8-39d4-4d8f-98ff-823fe69b080e