Named fields in attack action comound
Also mapped item ids for blocking and parrying
Set the ref-target type for updated fields.
Determined 'attack' action unk_20 is the target_body_part_id
0.40.15 OS X offsets
Merge remote-tracking branch 'origin/master' into 0.40.15-osx-offsets

Conflicts:
	symbols.xml
Locate renderer on 0.40.15 (OS X)
Linux/Windows 0.40.15 start_dwarf_count
Merge pull request #22 from hobotron-df/attack-action

Named fields in attack action compound
Merge pull request #28 from lethosor/0.40.15-offsets

0.40.15 offsets
Add keydisplay address for Windows, fix save_on_exit for OSX