Add CRONUS support and use X509_USER_PROXY when in the path
Add CRONUS support and use X509_USER_PROXY when in the path

bbockelm/glideinWMS,holzman/glideinwms-old,bbockelm/glideinWMS,holzman/glideinwms-old,bbockelm/glideinWMS,bbockelm/glideinWMS,holzman/glideinwms-old