Changes

Improved build.xml - cleaner, reduced build time in most cases

Now builds in root directory - prevents jenkins workspace messiness.
No longer unnecessarily checks for updates to MCP if the file already exists - MCP doesn't appear to get silent updates, version number always changes.
Only sets up forge+mcp if forge or MCP have updated, else merely recompiles and reobfuscates.

Signed-off-by: Ross Allan <[email protected]>
 (commit: 0a74b9f)