Fixed build on Windows

Please do not pull until @halfnelson has had a look at this.

During the switch to LuaJIT 2.0.3, ``cmake/third-party/luajit/msvcbuild-moai.bat`` was changed and now uses a different version of the run-time library. As a result, the build fails on Windows (see error messages below). I've reverted the compiler switches to what they were before and it seems to work, but I'd like @halfnelson to make sure I haven't missed anything.

````
"C:\dev\projects\moai-dev\cmake\projects\vs2013\moai.sln" (default target) (1) ->
"C:\dev\projects\moai-dev\cmake\projects\vs2013\ALL_BUILD.vcxproj.metaproj" (default target) (2) ->
"C:\dev\projects\moai-dev\cmake\projects\vs2013\host-glut\moai.vcxproj.metaproj" (default target) (82) ->
"C:\dev\projects\moai-dev\cmake\projects\vs2013\host-glut\moai.vcxproj" (default target) (83) ->
(Link target) ->
  LIBCMT.lib(invarg.obj) : error LNK2005: __invalid_parameter already defined in MSVCRTD.lib(MSVCR120D.dll) [C:\dev\projects\moai-dev\cmake\projects\vs2013\host-glut\moai.vcxproj]
  LIBCMT.lib(invarg.obj) : error LNK2005: __invoke_watson already defined in MSVCRTD.lib(MSVCR120D.dll) [C:\dev\projects\moai-dev\cmake\projects\vs2013\host-glut\moai.vcxproj]
  MSVCRTD.lib(MSVCR120D.dll) : error LNK2005: __strdup already defined in LIBCMT.lib(strdup.obj) [C:\dev\projects\moai-dev\cmake\projects\vs2013\host-glut\moai.vcxproj]
  C:\dev\projects\moai-dev\cmake\projects\vs2013\host-glut\Debug\moai.exe : fatal error LNK1169: one or more multiply defined symbols found [C:\dev\projects\moai-dev\cmake\projects\vs2013\host-glut\moai.vcxproj]
````