Update ruby-pg to 0.18.4.

== v0.18.4 [2015-11-13] Michael Granger <ged@FaerieMUD.org>

Enhancements:
- Fixing compilation problems with Microsoft Visual Studio 2008. GH #10
- Avoid name clash with xcode and jemalloc. PR#22, PR#23

Bugfixes:
- Avoid segfault, when quote_ident or TextEncoder::Identifier
  is called with Array containing non-strings. #226

databases/ruby-pg/Makefile

@@ -1,6 +1,6 @@
-# $NetBSD: Makefile,v 1.22 2015/09/13 04:47:39 taca Exp $
+# $NetBSD: Makefile,v 1.23 2015/11/29 12:10:16 taca Exp $
 
-DISTNAME=	pg-0.18.3
+DISTNAME=	pg-0.18.4
 PKGNAME=	${RUBY_PKGPREFIX}-${DISTNAME:C/postgres/&ql/}
 CATEGORIES=	databases
 

databases/ruby-pg/distinfo

@@ -1,6 +1,6 @@
-$NetBSD: distinfo,v 1.17 2015/11/03 01:56:34 agc Exp $
+$NetBSD: distinfo,v 1.18 2015/11/29 12:10:16 taca Exp $
 
-SHA1 (pg-0.18.3.gem) = fc7af57ab8b8d58a35b78cfbe6be869b130127fe
-RMD160 (pg-0.18.3.gem) = 2622cd1b422ea0f3716edfe583a6aa082f80819c
-SHA512 (pg-0.18.3.gem) = dc4152dd7b546f3e182075ecd9086ca88c462b570d948f7879de8084e36f19fc6256ab8e5b3ac2ff267f43998a99f44c159c84af47e6637fa14b2aa16f14b139
-Size (pg-0.18.3.gem) = 218624 bytes
+SHA1 (pg-0.18.4.gem) = e095413602552ef50ef938d547c58fc1d0940d8b
+RMD160 (pg-0.18.4.gem) = e69cdbfabaf2142c2ff4458213a13668c21da696
+SHA512 (pg-0.18.4.gem) = 48e792756c7ee205164b59a9515ace6320150f0ce1907293f8c1a736300c62c0b38c1be49e8ad4f1a50f29abc7f72bb43e742a8e63d9606eff4c7d2191a4fb74
+Size (pg-0.18.4.gem) = 219648 bytes