SIGPIPE is now ignored by the server core. The request write routines

(ap_rputc, ap_rputs, ap_rvputs, ap_rwrite, ap_rprintf, ap_rflush) now
correctly check for output errors and mark the connection as aborted.
Replaced many direct (unchecked) calls to ap_b* routines with the
analogous ap_r* calls.  Removed the pointless handling of EAGAIN errors.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@82876 13f79535-47bb-0310-9956-ffa450edef68