Restructure the src directory

It is split into
- /libgnucash (for the non-gui bits)
- /gnucash (for the gui)
- /common (misc source files used by both)
- /bindings (currently only holds python bindings)

This is the first step in restructuring the code. It will need much
more fine tuning later on.

common/debug/valgrind/CMakeLists.txt

@@ -0,0 +1,11 @@
+SET(valgrind_FILES
+        valgrind-gdk.supp
+        valgrind-glib.supp
+        valgrind-gnucash.supp
+        valgrind-libfontconfig.supp
+        valgrind-libgda.supp
+        valgrind-libguile.supp
+        valgrind-x11.supp
+        )
+
+SET_DIST_LIST(valgrind_DIST CMakeLists.txt Makefile.am ${valgrind_FILES})