Avoid using sscanf to determine the HTTP protocol number in

the common case because sscanf is a performance hog. From
Mike Abbot's Accelerating Apache patch number 6.

Submitted by: Mike Abbot <mja@trudge.engr.sgi.com>
Reviewed by: Bill Stoddard


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88523 13f79535-47bb-0310-9956-ffa450edef68