Fixed bug in bcwrite regarding failure to account for partial writes.

Avoids calling bflush() when the client is pipelining requests.
Remove unnecessary flushes from http_protocol.

Submitted by: Dean Gaudet
Reviewed by: Roy Fielding, Alexei Kosut


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77495 13f79535-47bb-0310-9956-ffa450edef68