Add tests for "git describe --long".

* Move test logic to scm-update.sh scripts.
    * Check for "git describe --long".

tests/jobs/svn-update.sh

@@ -1 +1,23 @@
 #! /bin/sh
+
+repo="$1"
+STATE_FILE=$(pwd)/.svn-state
+if test -e $STATE_FILE; then
+    state=$(cat $STATE_FILE)
+    test $state -gt 1 && state=0
+else
+    state=0;
+fi
+
+case $state in
+    (0) echo "::Create repo. -- continue -- updated::"
+    svnadmin create svn-repo
+    svn co $repo svn-checkout
+    touch svn-checkout/svn-file
+    svn add svn-checkout/svn-file
+    svn commit -m "add svn file" svn-checkout/svn-file
+    ;;
+    (*) echo "::End. -- stop -- nothing::";;
+esac
+
+echo $(($state + 1)) > $STATE_FILE