hitlocation code constants for good

This release does not add any feature or fix any bug, instead it makes the plugin rely on B3 to determine hitlocation codes.

That means that when future Urban Terror updates will again change hitlocation or weapon codes, you will only have to update B3 (since v1.10.dev.daily46) to get this plugin working correctly with those new values.

update for UrT 4.2.013

• changed hitlocaton code for HL_HELMET to support the last UrT release (4.2.013)

by @fenixxx

update for UrT 4.2.001

• change default config file to .ini format (.xml format still works)
• support Urban Terror 4.2 new hitlocation values. See https://github.com/courgette/b3-plugin-headshotsurt/issues/1