New query XQueryType with num value 9, enum name kXR_Qhead

Author: alja

src/XProtocol/XProtocol.hh

@@ -620,6 +620,7 @@ enum XQueryType {
    kXR_Qckscan= 6,
    kXR_Qconfig= 7,
    kXR_Qvisa  = 8,
+   kXR_Qhead  = 9,
    kXR_Qopaque=16,
    kXR_Qopaquf=32,
    kXR_Qopaqug=64

src/XrdCl/XrdClFileSystem.hh

@@ -60,6 +60,7 @@ namespace XrdCl
       Space          = kXR_Qspace,     //!< Query logical space stats
       Stats          = kXR_QStats,     //!< Query server stats
       Visa           = kXR_Qvisa,      //!< Query file visa attributes
+      Head           = kXR_Qhead,      //!< Query http header response
       XAttr          = kXR_Qxattr      //!< Query file extended attributes
     };
   };