Copy CACAO's .hg repo as well with --with-cacao-src-dir

[Stefan Ring]

Can I ask for the following change in icedtea so CACAO can determine
its own revision?

diff -r 54ceda20a02c Makefile.am
--- a/Makefile.am       Mon Feb 27 14:40:52 2012 +0100
+++ b/Makefile.am       Sat Mar 10 23:19:19 2012 +0100
@@ -997,8 +997,8 @@
        set -e ; \
        if ! test -d cacao ; \
        then \
-         mkdir -p cacao/cacao ; \
-         cp -r $(ALT_CACAO_SRC_DIR)/* cacao/cacao/ ; \
+         mkdir cacao ; \
+         cp -rL $(ALT_CACAO_SRC_DIR) cacao/cacao ; \
        fi
 else
        set -e ; \

I'm not sure where to put this first. icedtea8, 7, 6? The patch shown
here is against icedtea6.

Regards
Stefan