[Gtkradiant] [Bug 554] add default texture scale configuration to prefs

[gtkradiant@zerowing.idsoftware.com]

http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=554

wjoseph@europe.ea.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|default texture scale       |add default texture scale
                   |configuration               |configuration to prefs