[ctioga2] correct parsing of variables in new-style command files

git-svn-id: svn+ssh://rubyforge.org/var/svn/ctioga2/trunk/ctioga2@393 86c91514-0d3b-42e0-aed1-4dfce116d947
[ctioga2] some tests/examples for the new file format

git-svn-id: svn+ssh://rubyforge.org/var/svn/ctioga2/trunk/ctioga2@394 86c91514-0d3b-42e0-aed1-4dfce116d947