bug 297914 - Use BZ2 packaging for gtk2 builds as default, r=bsmedberg,chase

toolkit/mozapps/installer/packager.mk

@@ -55,8 +55,12 @@ else
 ifeq (,$(filter-out SunOS, $(OS_ARCH)))
 MOZ_PKG_FORMAT  = BZ2
 else
+ifeq ($(MOZ_WIDGET_TOOLKIT),gtk2)
+MOZ_PKG_FORMAT  = BZ2
+else
 MOZ_PKG_FORMAT  = TGZ
 endif
+endif
 INSTALLER_DIR   = unix
 endif
 endif