PR:
Obtained from:
Submitted by:	William Rowe
Reviewed by:

  Created ap_base64.h to extract those declarations for clarity from ap.h

  CORE_PRIVATE, httpd.h do not belong in library functions, removed from ap.lib

  Use apr headers for declarations in ap.lib stuff, kill AP_LONG from ap_sha1.h

  Move credit to lib/apr/lib/ap_snprintf.c from ap.h for authorship


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85097 13f79535-47bb-0310-9956-ffa450edef68