Update calls to factories to use new ::create methods
Change-Id: I01d4417820f52718836c92faf3c2fae0dc96b30d
Signed-off-by: Stephan Bergmann <sbergman@redhat.com>, added some tweaks.
Naming convention for gbuild methods:
- "add" is used for stuff that is logically a part of the target
(i.e. not registered at the Module, but defined in the target's makefile)
- "use" is used for stuff that is logically a different target
(i.e. it is registered at the Module, has it's own makefile, may be
in a different module than the target)
