[Qt] Make 'make -f Makefile.DerivedSources qmake' work

Reviewed by Lars Knoll.

Previously this target ended up generating a file named
Makefile.DerivedSources.DerivedSources, and so on.

* DerivedSources.pro:

git-svn-id: svn://svn.chromium.org/blink/trunk@54412 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/ChangeLog

+2010-02-04  Tor Arne Vestbø  <tor.arne.vestbo@nokia.com>
+
+        Reviewed by Lars Knoll.
+
+        [Qt] Make 'make -f Makefile.DerivedSources qmake' work
+
+        Previously this target ended up generating a file named
+        Makefile.DerivedSources.DerivedSources, and so on.
+
+        * DerivedSources.pro:
+
 2010-02-04  Christian Dywan  <christian@twotasts.de>
 
         Reviewed by Xan Lopez.

third_party/WebKit/DerivedSources.pro

@@ -7,7 +7,8 @@ SUBDIRS += \
 
 for(subpro, SUBDIRS) {
     subdir = $${dirname(subpro)}
-    subtarget = $$replace(subdir, [^A-Za-z0-9], _)
+    subtarget = $$replace(subpro, [^a-zA-Z0-9_], -)
+    eval($${subtarget}.makefile = "Makefile.DerivedSources")
     eval(generated_files-$${subtarget}.commands = (cd $$subdir && $(MAKE) -f Makefile.DerivedSources generated_files))
     QMAKE_EXTRA_TARGETS += generated_files-$${subtarget}
     generated_files.depends += generated_files-$${subtarget}