Spellcheck.
[qnx] Add prepare scripts to locate NDK.  For mono do not attempt to download - build will fail if no NDK is installed.
[qnx] Updated build script to utlizie new utility scripts for locating NDK.
Merge pull request #49 from Unity-Technologies/bb10

Bb10
Don't store huge numbers in int32.
Case 482651.
Merge branch 'mono-bisect' of github.com:Unity-Technologies/mono into mono-bisect
Export mono_loader_get_last_error and mono_loader_error_prepare_exception.
Merge branch 'mono-bisect' of github.com:Unity-Technologies/mono into mono-bisect
Add calls to GC_set_dirty_bit for mutations to internal GC structures.
Merge remote-tracking branch 'unity/unity-staging' into boehm-incremental2