common.mk (pkgconfig-data): moved from Makefile.in.
tool/rbinstall.rb: install pc file only if non-empty. [ruby-core:32901] #3983
win32/Makefile.sub (ruby_pc): create pc file.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
common.mk (pkgconfig-data): moved from Makefile.in.
tool/rbinstall.rb: install pc file only if non-empty.
[ruby-core:32901] #3983
win32/Makefile.sub (ruby_pc): create pc file.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e