Merge r1796348 from trunk:

core: deprecate and replace ap_get_basic_auth_pw

  *) core: Deprecate ap_get_basic_auth_pw() and add 
    ap_get_basic_auth_components(). 

Submitted By: Emmanuel Dreyfus <manu netbsd.org>, Jacob Champion, Eric Covener



Submitted by: covener
Reviewed by: covener, ylavic, jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1796855 13f79535-47bb-0310-9956-ffa450edef68