pcre++: use patch DSL
peervpn: use patch DSL
phoronix-test-suite: use patch DSL
picocom: use patch DSL
pig: use patch DSL
pjsip: use patch DSL
plowshare: use patch DSL
png2ico: use patch DSL
pngnq: use patch DSL
pocl: use patch DSL
portmidi: use patch DSL
postgres-xc: use patch DSL
postgresql: use patch DSL
proftpd: use patch DSL
vorbis-tools: add pkg-config dep

Fixes #27379.
libagg: needs newer autotools

Fixes #27525.
poppler: update revision to propagate fix for splash backend

See 8a888cf1cf2fc1486b94ce3b3aa392b721d2ab83.

Fixes #26959.
libtar 1.2.20

Update libtar to 1.2.20, add build dependencies on autotools.
Point to new repository where development has been taking place.
libtar: add 1.2.20 bottle.

Closes #27538.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
influxdb 0.5.0-rc.6