redhat: adapt to upstream Makefile change
Upstream commit 67d7c302 breaks our include of Makefile.rhelver when the O= option is used (moves the object file directory). Move the include of Makefile.rhelver to a point where the absolute path to the source dir is defined.
Thanks to Eder Zulian (ezulian) for tracking this down.
Signed-off-by: Clark Williams williams@redhat.com