Merge pull request #33 from lukexi/master

Null-terminate Text bytestrings
Use the new ReactiveCocoa repository URL
Add a proper MIT license file
Move and re-pin RAC submodule, remove separate libextobjc
Ignore xcuserdata
Add a script for locating ghc and ghc-pkg
Add a Haskell script to aggregate Cabal flags for linking packages
Automatically find flags for dependencies too
Skip package link options and extra libraries, don't nub
Add a script for statically linking Haskell files and packages
Don't assume the presence of 'main'
Build to standard Xcode locations
Get rid of dumb Demo and Configuration stuff
Export all headers
Use framework-style imports
General Objective-C code cleanup
Add genconfig and bootstrap scripts for setting up xcconfigs
Fix all the compilation
Only build crazy GHC libs into the ObjectiveHaskell static library

Apps don't need to re-link all the standard stuff. Also, shut up libtool for a ridiculous speed increase.
Fix some linker flags that were apparently causing build failures