ports/53181: New port: postgresql-contrib

[Palle Girgensohn]

Wow, sorry, very clumsy of me! This should of course be:

- @dirrm share/postgresql
- @dirrm share/doc/postgresql
- @dirrm lib/postgresql

+ @unexec rmdir %D/share/doc/postgresql 2>/dev/null || true
+ @unexec rmdir %D/share/postgresql 2>/dev/null || true
+ @unexec rmdir %D/lib/postgresql 2>/dev/null || true

Thanks for pointing it out!

/Palle