Refactoring of library declaration in qt4.jam.

Simplyfied declaration of Qt component libraries.
Removed duplicated code.
Add test cases for most of the Qt component libraries.


[SVN r47391]

tools/build

@@ -1 +1 @@
-Subproject commit bd213a62da9740d5bd1b1ea5e3297a2b89d8e817
+Subproject commit 544c50a044f46745686e81286222737dc11e44b9