Corrected several bugs.
Corrected several bugs.

All modules in tests_good now translate.
Jing complains about problems with <start>, this is due to the fact
that XML unlike YANG must have a single root element.
Complaints about missing start are OK, such modules are prepared for
inclusion.

davidegurgone/pyang,jgatkinsn/pyang,mbj4668/pyang,acidjunk/pyang,jgatkinsn/pyang,vkosuri/pyang,brenoah/pyang,krvinay123/test,brenoah/pyang,davidegurgone/pyang,kspviswa/pyang,vkosuri/pyang,kspviswa/pyang,mbj4668/pyang,acidjunk/pyang,krvinay123/test