Landing for Martin Maly.
Landing for Martin Maly.

Fix xcode project. 
Add missing files (lithium.cc, lithium.h, lithium-x64.cc). 
Add 64 bit targets to "All" targets group for Xcode build. 

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@6239 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh