*CC: Find declaration of a class constructor now goes to the correct constructor functions, not the class definition. This fixes a bug reported here: http://forums.codeblocks.org/index.php/topic,13753.msg92654.html#msg92654. Discussions can also be found there.
-CC: variable name refactoring. (no functional change)
-CC: image file name changes according to the previous variable name refactoring. (no functional change)
* compiler: Fix crash when using *No compiler* for building projects (reported here http://forums.codeblocks.org/index.php/topic,19071.msg131370.html#msg131370)

Changed the return type of the GetCompilerTool method, so the clients can
check if the returned value is correct or not. This requires a change to
the SDK version, because the API/ABI is broken.
- CC: fix autotools builds after rev9758