add haddock reindexing for %postun also

This will slow down removal of ghc-*-devel pkgs but seems no simple
way round that and removal is less common than installing anyway.

ghc-rpm-macros.ghc

@@ -224,6 +224,14 @@ fi\
 \
 %postun -n %{basepkg}-devel\
 %ghc_pkg_recache\
+if [ $1 -gt 1 ] ; then\
+  if [ -d %{_localstatedir}/lib/rpm-state/ghc/ ]; then\
+    touch %{_localstatedir}/lib/rpm-state/ghc/haddock-reindex\
+  fi\
+else\
+  cd %{ghcdocbasedir}/libraries\
+  ./gen_contents_index\
+fi\
 \
 %posttrans -n %{basepkg}-devel\
 if [ -f %{_localstatedir}/lib/rpm-state/ghc/haddock-reindex ]; then\

ghc-rpm-macros.spec

@@ -73,8 +73,8 @@ EOF
 
 %changelog
 * Mon Oct 29 2012 Jens Petersen <petersen@redhat.com> - 0.98-1
-- gen_contents_index is now run once from posttrans (#870694)
+- gen_contents_index is now run once from posttrans or after removal (#870694)
-  http://fedoraproject.org/wiki/Packaging:ScriptletSnippets#Saving_state_between_scriptlets
+  see http://fedoraproject.org/wiki/Packaging:ScriptletSnippets#Saving_state_between_scriptlets
 
 * Thu Oct 25 2012 Jens Petersen <petersen@redhat.com> - 0.97.3-1
 - BR redhat-rpm-config instead of ghc-rpm-macros