Recent work
Merge branch 'master' of git://github.com/Segs/Segs
Preparatory work on using naked_ace from 3rd_party dir.
Using CMake OPTION instead of cache'd SET's
Moved FIND_PACKAGE invocations to root CMakeLists.txt
Added FindMRuby.cmake
Made script engine build, optional.
Removed MRubyEngine.h from main.cpp
Merge pull request #7 from nemerle/master

A step towards upgrading github repo to my local one.