clean up gitignore files

Rather than listing explicit object files, ignore all of them in
the whole tree.

Also ignore patch/gdb related files throughout.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

src/librc/.gitignore

@@ -1,16 +1,2 @@
-.depend
-librc.o
-librc-daemon.o
-librc-depend.o
-librc-misc.o
-librc-stringlist.o
-librc.So
-librc-daemon.So
-librc-depend.So
-librc-misc.So
-librc-stringlist.So
-librc.a
 librc.so.1
-librc.so
-.depend
 rc.h