[573021] fixed zoom related drawing issues of text

With this fix the scalable layers are using the native graphics class
and not the draw2d scaled graphics anymore. This fixes the cropped text
label issue.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=573021
Change-Id: I0c5d088a3313dd049cf2e61f5b6e2d2fee0fbea3
1 file changed