kbuild: allow cc-ifversion to have the argument for false condition

The macro "try-run" can have an argument for each of true and false
cases.  Having an argument for the false case of cc-ifversion (and
ld-ifversion) would be useful too.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

diff --cc Documentation/kbuild/makefiles.txt
Simple merge

diff --cc scripts/Kbuild.include
Simple merge