Improve gcb and glexec handling
Improve gcb and glexec handling

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