Use scriptlet expansion.

We prefer scriptlet expansion (-e) over the use of rpm.expand in Lua.
The goal is to have a fully expanded Lua program with as little
dynamic processing as possible to simplify the operations carried
out in Lua.

The use of rpm.expand was only needed until COPR migrated from EL6
to Fedora, and with this complete we can remove the use of rpm.expand
in favour of scriptlet expansion.

Tested on Fedora Rawhide by verifying global setting of %_install_langs
macro changes installed locale-archive locales correctly.

glibc.spec

@@ -1,6 +1,6 @@
 %define glibcsrcdir  glibc-2.23-465-g31d0a4f
 %define glibcversion 2.23.90
-%define glibcrelease 22%{?dist}
+%define glibcrelease 23%{?dist}
 # Pre-release tarballs are pulled in from git using a command that is
 # effectively:
 #
@@ -1882,7 +1882,7 @@ end
 
 %postun -p /sbin/ldconfig
 
-%posttrans all-langpacks -p <lua>
+%posttrans all-langpacks -e -p <lua>
 -- If at the end of the transaction we are still installed
 -- (have a template of non-zero size), then we rebuild the
 -- locale cache (locale-archive) from the pre-populated
@@ -1890,7 +1890,7 @@ end
 if posix.stat("%{_prefix}/lib/locale/locale-archive.tmpl", "size") > 0 then
   pid = posix.fork()
   if pid == 0 then
-    posix.exec("%{_prefix}/sbin/build-locale-archive", "--install-langs", rpm.expand("%%{_install_langs}"))
+    posix.exec("%{_prefix}/sbin/build-locale-archive", "--install-langs", "%%{_install_langs}")
   elseif pid > 0 then
     posix.wait(pid)
   end
@@ -2069,6 +2069,10 @@ rm -f *.filelist*
 %endif
 
 %changelog
+* Sat Jun 18 2016 Carlos O'Donell <carlos@redhat.com> - 2.23.90-23
+- Use scriptlet expansion in all-langpacks posttrans script to expand
+  _install_langes macro.
+
 * Mon Jun 13 2016 Florian Weimer <fweimer@redhat.com> - 2.23.90-22
 - Remove glibc-fedora-uname-getrlimit.patch.  This patch was
   introduced to fix bug rhbz#579086 (Preloading a replacement uname