Rename new_connection() in http_main.c to ap__new_connection()

	in order to avoid name collisions with LDAP libraries.  The
	function can't be made static without breaking mod_perl,
	so I've created the "ap__" prefix for private non-static non-API
	identifiers.  Somewhat arbitrary, but it sort of goes along
	with "ap_" referring to Apache httpd-neutral names - the
	double-underbar means that these *aren't* httpd-neutral.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79984 13f79535-47bb-0310-9956-ffa450edef68