Fix computation of the size of 'struct sockaddr_un' when passed to 'connec()'.
Use the same logic as the one in ' in 'proxy_util.c'.

git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1598946 13f79535-47bb-0310-9956-ffa450edef68
SetHandler only has one parameter + reflow a sentence to synch  with 2.4.x

git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1598962 13f79535-47bb-0310-9956-ffa450edef68