rejig build process to not link in unused libs. Make project includes more robust. Add host modules system for android. Start porting
move the rest of the android 3rdparty modules into host-modules-android format.
fix duplicate activity definition in fortumo module
list the valid modules for android
Merge pull request #1051 from moaiforge/pull_android_host_modules

merging this as it shouldn't affect the ant host and is required for a functioning gradle host.