use HTTP URL's for system id's. Default build options do
not use this NetAccessor. Specify the '-n socket' option
to 'runConfigure' to configure Xerces-C to use this new
feature. The code works under Solaris 2.6, Linux, AIX
and HPUX 11 with aCC.
Todo's: enable proper error handling.


git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@171972 13f79535-47bb-0310-9956-ffa450edef68