Debugger: Make sure cpptools is compiled first

debugger links against cpptools library

Change-Id: I9c1435cf1511f2962e11b5ef488b9764024aa7f1
Reviewed-on: http://codereview.qt-project.org/4959

Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/plugins.pro

@@ -172,6 +172,7 @@ plugin_bookmarks.depends += plugin_texteditor
 plugin_debugger.subdir = debugger
 plugin_debugger.depends = plugin_projectexplorer
 plugin_debugger.depends += plugin_coreplugin
+plugin_debugger.depends += plugin_cpptools
 
 plugin_fakevim.subdir = fakevim
 plugin_fakevim.depends = plugin_coreplugin