ap_table_set() causes an ap_pstrdup() of both arguments, one of the

arguments is a constant and it's a waste to pstrdup it.  Furthermore using
a static local buffer means there is a static limit to the message length.
Also, ap_pvsprintf() can get away with zero-copies of the output in most
cases, whereas ap_pstrdup() always copies the output at least once.
Unlike Ken's claim there's no "gyration" required by ap_pv?sprintf()
to figure out the string length.  Clean this all up.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@82131 13f79535-47bb-0310-9956-ffa450edef68