Revert "Add NO_STAGE all over the place in preparation for the staging support"

This reverts commit f31f7d04a81d4f2714f5afde40845d32143d514e.
Revert "- Remove DISTV: only used in PKGNAMESUFFIX and complained by portlint"

This reverts commit 233e6a68abd9756a22acf59f25e6954b3e676183.
Revert "- Fix pkg name collision"

This reverts commit ff1812989d50064aaf1925cba9d9d5ffccfeb432.

Conflicts:
	databases/postgresql93-server/Makefile