Proposed commit log:
www/mod_http2_devel: Update to version 1.5.2 - Update to version 1.5.2 - Add mod_proxy_http2 Apache module - Add missing USE_OPENSSL - Define PORTDOCS - Replace pkg-plist with PLIST_FILES Reviewed_by: feld (mentor), koobs (mentor) Approved by: (mentor) Differential_Revision: D6010