OpenBSD/ports 5GUV3Fsgeo/pgpointcloud Makefile distinfo

   Work with PostgreSQL 11 using a distpatch from GitHub.

   PostgreSQL 11 breakage pointed out by ajacoutot@
   OK ajacoutot@
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1.5+6-1geo/pgpointcloud/Makefile
1.3+2-0geo/pgpointcloud/distinfo
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