...in case you don't do a full 'make' but just some 'make CppunitTest...
CPPUNITTRACE="gdb --args"' and then wonder why the gdb pretty printers are not
available, so you can at least do a manual 'make install-gdb-printers' now.

Change-Id: Idd19ed1bba0fa196271cae9de80b4e7baf79ac2a