Ken Cunningham authored and Ken committed a6b5bbadf26
watchman: fix build on mojave
closes: https://trac.macports.org/ticket/57387
backport patch from master to fix error on mojave
Also, take care of the following issues:
remove unused patchfile
add test support to Portfile
requires c++11 1.1 PG
add size to checksums
bump revision