Revert "postgresql: Add dev output"

Firstly this creates a cycle in 9.6 .out <-> .dev after fixing the PGXS
path.

Secondly this breaks extension handling and the pg_config as it
resolves a lot of paths relatively resulting in the following bogus
output:

BINDIR = /nix/store/csiq6zkn2c994kkdjln461jvgbka4yb1-postgresql-9.5.9-dev/bin
DOCDIR = /nix/store/csiq6zkn2c994kkdjln461jvgbka4yb1-postgresql-9.5.9-dev/share/doc
HTMLDIR = /nix/store/csiq6zkn2c994kkdjln461jvgbka4yb1-postgresql-9.5.9-dev/share/doc
INCLUDEDIR = /nix/store/csiq6zkn2c994kkdjln461jvgbka4yb1-postgresql-9.5.9-dev/include
PKGINCLUDEDIR = /nix/store/csiq6zkn2c994kkdjln461jvgbka4yb1-postgresql-9.5.9-dev/include
INCLUDEDIR-SERVER = /nix/store/csiq6zkn2c994kkdjln461jvgbka4yb1-postgresql-9.5.9-dev/include/server
LIBDIR = /nix/store/85s9m7hpfzsl93wcb5gr6ii2km9mpx3z-postgresql-9.5.9-lib/lib
PKGLIBDIR = /nix/store/85s9m7hpfzsl93wcb5gr6ii2km9mpx3z-postgresql-9.5.9-lib/lib
LOCALEDIR = /nix/store/csiq6zkn2c994kkdjln461jvgbka4yb1-postgresql-9.5.9-dev/share/locale
MANDIR = /nix/store/csiq6zkn2c994kkdjln461jvgbka4yb1-postgresql-9.5.9-dev/share/man
SHAREDIR = /nix/store/csiq6zkn2c994kkdjln461jvgbka4yb1-postgresql-9.5.9-dev/share
SYSCONFDIR = /etc/postgresql
PGXS = /nix/store/csiq6zkn2c994kkdjln461jvgbka4yb1-postgresql-9.5.9-dev/lib/pgxs/src/makefiles/pgxs.mk
CONFIGURE = '--prefix=/nix/store/irqqq4g173g9xrk1mh12kxv0s1d8dbyh-postgresql-9.5.9' '--with-openssl' '--with-libxml' '--sysconfdir=/etc' '--libdir=/nix/store/85s9m7hpfzsl93wcb5gr6ii2km9mpx3z-postgresql-9.5.9-lib/lib' '--with-ossp-uuid' 'CC=gcc'
CC = gcc
CPPFLAGS = -D_GNU_SOURCE -I/nix/store/z6r0j2b4bcdfw3pck2x6ay0vvx0qzb92-libxml2-2.9.5-dev/include/libxml2
CFLAGS = -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O2
CFLAGS_SL = -fPIC
LDFLAGS = -L../../../src/common -L/nix/store/ighspl5sa3qi1zy7nkih0c9p73xjfqa6-libxml2-2.9.5/lib -Wl,--as-needed -Wl,-rpath,'/nix/store/85s9m7hpfzsl93wcb5gr6ii2km9mpx3z-postgresql-9.5.9-lib/lib',--enable-new-dtags
LDFLAGS_EX =
LDFLAGS_SL =
LIBS = -lpgcommon -lpgport -lxml2 -lssl -lcrypto -lz -lreadline -lrt -lcrypt -ldl -lm
VERSION = PostgreSQL 9.5.9

This can probably only be properly fixed by rewriting pg_config in large
parts as it does not in any way respect splitting the postgres tree and
assumes it can simply resolve paths relative to its location. This does
not even handle symlinks:

$ result-dev/bin/pg_config
BINDIR = /home/robin/dev/nixpkgs-upstream/result-dev/bin
DOCDIR = /home/robin/dev/nixpkgs-upstream/result-dev/share/doc
HTMLDIR = /home/robin/dev/nixpkgs-upstream/result-dev/share/doc
INCLUDEDIR = /home/robin/dev/nixpkgs-upstream/result-dev/include
PKGINCLUDEDIR = /home/robin/dev/nixpkgs-upstream/result-dev/include
INCLUDEDIR-SERVER = /home/robin/dev/nixpkgs-upstream/result-dev/include/server
LIBDIR = /nix/store/85s9m7hpfzsl93wcb5gr6ii2km9mpx3z-postgresql-9.5.9-lib/lib
PKGLIBDIR = /nix/store/85s9m7hpfzsl93wcb5gr6ii2km9mpx3z-postgresql-9.5.9-lib/lib
LOCALEDIR = /home/robin/dev/nixpkgs-upstream/result-dev/share/locale
MANDIR = /home/robin/dev/nixpkgs-upstream/result-dev/share/man
SHAREDIR = /home/robin/dev/nixpkgs-upstream/result-dev/share
SYSCONFDIR = /etc/postgresql
PGXS = /nix/store/csiq6zkn2c994kkdjln461jvgbka4yb1-postgresql-9.5.9-dev/lib/pgxs/src/makefiles/pgxs.mk
CONFIGURE = '--prefix=/nix/store/irqqq4g173g9xrk1mh12kxv0s1d8dbyh-postgresql-9.5.9' '--with-openssl' '--with-libxml' '--sysconfdir=/etc' '--libdir=/nix/store/85s9m7hpfzsl93wcb5gr6ii2km9mpx3z-postgresql-9.5.9-lib/lib' '--with-ossp-uuid' 'CC=gcc'
CC = gcc
CPPFLAGS = -D_GNU_SOURCE -I/nix/store/z6r0j2b4bcdfw3pck2x6ay0vvx0qzb92-libxml2-2.9.5-dev/include/libxml2
CFLAGS = -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O2
CFLAGS_SL = -fPIC
LDFLAGS = -L../../../src/common -L/nix/store/ighspl5sa3qi1zy7nkih0c9p73xjfqa6-libxml2-2.9.5/lib -Wl,--as-needed -Wl,-rpath,'/nix/store/85s9m7hpfzsl93wcb5gr6ii2km9mpx3z-postgresql-9.5.9-lib/lib',--enable-new-dtags
LDFLAGS_EX =
LDFLAGS_SL =
LIBS = -lpgcommon -lpgport -lxml2 -lssl -lcrypto -lz -lreadline -lrt -lcrypt -ldl -lm
VERSION = PostgreSQL 9.5.9

cc @edolstra

Revert "bacula: fix after postgresql output splitting"

This reverts commit 13c9cbac.

Revert "postgresql: fix pgxs dir in pg_config"

This reverts commit 21998d59.

Revert "rubyGems.pg: fix postgresql path"

This reverts commit e253ae7d.

Revert "kea: fix path to pg_config"

This reverts commit 086c636e.

Revert "php: fix build wrt. new postgres.dev build output"

This reverts commit 2f23a839.

Revert "gdal: fix path to pg_config"

This reverts commit 032c50d4.

Revert "postgresql: Add dev output"

This reverts commit b0280f59.