kDebug areas Be-Gone (almost)

Thanks to Marc Mutz's idea, one can now set their application debug area by telling the C++ compiler about it and then never having to remember that debug area again.

"Set it and forget it"

Simply add the following line into your application's top-level CMakeLists.txt

  add_definitions(-DKDE_DEFAULT_DEBUG_AREA=XXXX) 

(replacing XXXX with your debug area).

Then replace kDebug(XXXX) with kDebug() in your code and you never have to worry about remembering (or correctly typing) your debug area again.