Removed mono.patch, until I need it again.
Modified .gitignore to ignore mono_arm and *~.
Modified get-mono.sh to download mono branch mono-2-10-8, and also to build the mono arm binaries using a standalone toolkit setup from the android NDK, rather than Koush's Android.mk files, which would have otherwise needed to be maintained. Now the android binaries are built using the mono build system, for better or worse.