Added linux x64 support
Support for 64-bit host and toolchain, tested with NDK r8e and Boost 1.53
Merge remote-tracking branch 'lkalneus/master' into devel
Fixes undefined references when using Boost.Filesystem.

Currently only in 1.49 version of boost.
Re-add support for using a 32bit NDK on 64bit hosts

This is pretty much same as commit
8ae6be27d26c5174dfcb101dd31b98c5620e5b4f
from Michael Zoech.
Add install prefix
Support for NDK r9 by @pelya.

Conflicts:
	build-android.sh
Merge remote-tracking branch 'linqcan/fr-install' into devel