rpm: Resolve parallel install issue when installing lua

When lua is being installed on some systems that are being run with high levels
of parallelization there are cases where install-data-am and install-exec-hook
are processed at the same or a very short time apart. This causes
install-pkgbinPROGRAMS, which is a dependency of both, to be run at around the
same time This sometimes causes file contention and will sometimes be in a state
where install-exec-hook is looking for a file that is being installed or both
install-pkgbinPROGRAMS being run are installing the same file and fail because
it cannon create a new file.

This patch allows install-exec-hook to be called by install-data-am instead of
install-exec-am. It also removed the dependency in install-data-hook on
install-pkgbinPROGRAMS. This means install-pkgbinPROGRAMS will only be run once
so there whould be any file contention.

Upstream-Status: Submitted [RPM5 maintainer]

Signed-off-by: Morgan Little <morgan.little@windriver.com>

Index: rpm-5.4.14/lua/Makefile.am
===================================================================
--- rpm-5.4.14.orig/lua/Makefile.am
+++ rpm-5.4.14/lua/Makefile.am
@@ -326,7 +326,7 @@ clean-local:
 # XXX Build & install as rpmlua/rpmluac with hardlinks to lua/luac post install.
 # XXX CVS has lua/luac sub-directories in the Attic that collide with the
 # XXX lua/luac executable names when using cvs update.
-install-exec-hook:	install-pkgbinPROGRAMS
+install-data-hook:	
 	mkdir -p $(DESTDIR)$(pkgbindir)
 	$(__RM) -f $(DESTDIR)$(pkgbindir)/lua
 	$(__LN) $(DESTDIR)$(pkgbindir)/rpmlua $(DESTDIR)$(pkgbindir)/lua