Fix -no-gui

-no-gui still tried to build the graphicssystem and inputmethod
plugins, both of which require QtGui

Merge-request: 1215
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

(cherry picked from commit f0ae4f8ebdc6b7c50c163cfa29e686f3f87c8ba5)

Conflicts:
	src/plugins/plugins.pro

Change-Id: I74ced5817989604f3beebf1fcc60eabaf1fd8115
Reviewed-on: http://codereview.qt-project.org/4568
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

src/plugins/plugins.pro

@@ -6,10 +6,12 @@ unix:!symbian {
 } else {
         SUBDIRS *= codecs
 }
-!contains(QT_CONFIG, no-gui): SUBDIRS *= imageformats
-!embedded:!qpa:SUBDIRS *= graphicssystems
+!contains(QT_CONFIG, no-gui) {
+    SUBDIRS *= imageformats
+    !embedded:!qpa:SUBDIRS *= graphicssystems
+    !win32:!embedded:!mac:!symbian:SUBDIRS *= inputmethods
+    !symbian:SUBDIRS += accessible
+}
 embedded:SUBDIRS *=  gfxdrivers decorations mousedrivers kbddrivers
-!win32:!embedded:!mac:!symbian:SUBDIRS *= inputmethods
-!symbian:!contains(QT_CONFIG, no-gui):SUBDIRS += accessible
 symbian:SUBDIRS += s60
 qpa:SUBDIRS += platforms