Merge r574240 from trunk:

Don't send spurious "100 Continue" response lines.
PR 38014 [Basant Kumar Kukreja]


Submitted by: niq
Reviewed by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@574950 13f79535-47bb-0310-9956-ffa450edef68