restored MOAICoroutine.cpp
merge from feature/mem-overhaul
adding sdl to 3rdparty
SDL host in vs2008, vs2010; modified SDL_stdlib.c; new host modules helper files and funcs for managing modules
changed pathing for modules config file
tweaks to modules for ios host
updated xcode project for osx build with sdl
partial attempt at getting ios sample running
added call to AKUModulesRunLuaAPIWrapper to SDLHost.cpp
bug in SDL host mouse input handling
fixed serious bug in MOAIHttpTaskNSUrl (incorrect use of memory management)
fixed broken stack trace when missing custom ref
Merge commit '8960d6d097f4ee392d89b9833630842751c85fff' into feature/mem-overhaul