miscellaneous improvements to gradle native
- added cleanNative
- native and cleanNative are populated by addNative
- added cleanNativeDecora
- added nativeDecora and cleanNativeDecora to "Build" Group (so they show in gradle tasks)
- added description to nativeDecora and cleanNativeDecora
- changed the clean task to delete the folder target (instead of the file) - helps when switching from a regular build to parfait and vice-versa
- added cleanNative
- native and cleanNative are populated by addNative
- added cleanNativeDecora
- added nativeDecora and cleanNativeDecora to "Build" Group (so they show in gradle tasks)
- added description to nativeDecora and cleanNativeDecora
- changed the clean task to delete the folder target (instead of the file) - helps when switching from a regular build to parfait and vice-versa