Reverting r700026 and changing floats to doubles again. I'd probably like
to change even the ones interfacing with OpenGL which I've left for now.
svn path=/trunk/KDE/kdebase/workspace/; revision=707987
without kwin4_effect_ prefix, so change the name in those macros to lowercase.
Some modifications to the macros themselves as well.
Effect loading via dcop might work again now.
svn path=/trunk/KDE/kdebase/workspace/; revision=669033
