Rename coloreffects/ subdirectories to effects/ [classes have already been renamed from kpColorEffect to kpEffect etc.] and always use an imagelib/ parent subdirectory for effects/ and transforms/:

* In commands/ and dialogs/
  - move coloreffects/ -> imagelib/effects/
  - move transforms/ -> imagelib/transforms/

* In widgets/
  - move coloreffects/ -> imagelib/effects/
  
* imagelib/: rename coloreffects/ to effects/

Also move dialogs/imagelib/transforms/kptoolpreviewdialog.{h,cpp} to dialogs/imagelib/effects/kpcoloreffectsdialog.{h,cpp} [we should later rename this as well]


svn path=/trunk/KDE/kdegraphics/kolourpaint/; revision=611645