To Do

(done) --prefix
(done) support srcdir
(done) output installed file names to the file
(done) single package installer
(done) restruct setup.rb on the top of single package installers
(done) developper level hook again
(done) pass options to extconf.rb
(done) --without-ext
package checker (for developpers)
pass options to hook
? restruct extconf.rb
? rpm/deb auto creation