Enable -Wall for C++ too
Merge pull request #885 from ajschult/Wall

Enable -Wall for C++ too
Merge branch 'master' of https://github.com/SupSuper/OpenXcom into oXc_kL

Conflicts:
	configure.ac
Improve graphs performance
forget about reequipCraft() changes for now ...
mostly surface adj's on Diary Awards.

Merge branch 'master' of https://github.com/SupSuper/OpenXcom into oXc_kL
Conflicts:
	src/Savegame/SavedGame.cpp
	src/Savegame/SavedGame.h
BattlescapeGame: don't let proxy mines explode behind doors etc.
Put terrain icon onto interception window.

http://openxcom.org/forum/index.php?topic=2516.0