Proposed commit log:
www/nghttp2: Update to version 1.7.1 - Convert MASTER_SITES to USE_GITHUB - Remove USES=tar:xz - Remove unneeded RUN_DEPENDS - Add USES=autoreconf - Fix pkgconfig path - Remove defunct configure jemalloc fix - Fix LDFLAGS -ldl problem Reviewed_by: sunpoet (maintainer), koobs (mentor), feld (mentor) Approved by: (maintainer), (mentor) Differential_Revision: D5218 MFH: 2016Q1