Malauch

I hope this PR will be merged soon.

It looks like $PATH is correct. When I run `pg_config` I get this: ``` BINDIR = /Applications/Postgres.app/Contents/Versions/10/bin DOCDIR = /Applications/Postgres.app/Contents/Versions/10/share/doc/postgresql HTMLDIR = /Applications/Postgres.app/Contents/Versions/10/share/doc/postgresql INCLUDEDIR = /Applications/Postgres.app/Contents/Versions/10/include PKGINCLUDEDIR = /Applications/Postgres.app/Contents/Versions/10/include/postgresql INCLUDEDIR-SERVER...

Thank you for help. I tried `CMAKE_PREFIX_PATH` but it didn't change anything. For now I just made report on osm2pgsql github. I hope you can in near future add osm2pgsql...

``` System Version: OS X 10.10.4 (14E46) Kernel Version: Darwin 14.4.0 ``` BTW Plugin doesn't work