Added Ant config files.
Refactored: CoreMod now Coremod to avoid confusion. It's not meant to be
read as "Core Mod", which may be understood that it is the core of the
entire mod.
Little bug prevented the build-debug configuration to save the jar
correctly.
Slightly renamed project to prevent ambiguity. The name is not supposed
to imply its the core of the entire modular mod. It's merely a common
denominator.