[Icons] New toolbar icons:
* btExecuteBase-Disabled.png → btn-execute-disabled-32.png
* btExecuteBase-Hover.png → btn-execute-hover-32.png
* btExecuteBase-Normal.png → btn-execute-normal-32.png
* btExecuteBase-Pressed.png → btn-execute-pressed-32.png
* icoExecute-Disabled.png → ico-execute-disabled.png
* icoExecute-Normal.png → ico-execute-normal.png
* icoStop-Disabled.png → ico-stop-disabled.png
* icoStop-Normal.png → ico-stop-normal.png
[Icons] New version control overlay icons:
* overlay_added.png → added-overlay-16.png
* overlay_conflicted.png → conflict-overlay-16.png
* overlay_controlled.png → versioned-overlay-16.png
* overlay_lock_required.png → lock-required-overlay-16.png
* overlay_locked.png → locked-overlay-16.png
* overlay_modified.png → modified-overlay-16.png
* overlay_normal.png → normal-overlay-16.png
* overlay_removed.png → removed-overlay-16.png
* overlay_unlocked.png → unlocked-overlay-16.png
* overlay_unversioned.png → unversioned-overlay-16.png