Update ruby-gsl to 1.16.0.4.

* Switch to rb-gsl gem.

Fri Dec 19 2014
  * Ruby/GSL 1.16.0.4
    * Optimize and extract multiplication and division operations on Fixnum
      and Float. Pull request #8 by Veselin Vasilev.
    * Fixed division in GSL::Oper for GSL::Vector::Col. Issue #9.

Tue Oct 21 2014
  * Ruby/GSL 1.16.0.3
    * Fixed RDoc issues. Issue #6 by @bigtunacan.
    * Fixed $LOAD_PATH problem. Pull request #7 by Takahiro SATOH.

Wed Jul  9 2014
  * Ruby/GSL 1.16.0.2
    * Fixed linking problem.

Thu Apr 24 2014
  * Ruby/GSL 1.16.0.1
    * Extensive cleanup.
    * Fixed linking problems.
    * Required Ruby version >= 1.8.7.

Fri Jan 24 2014
  * Ruby/GSL 1.16.0
    * GSL-1.16 support.

math/ruby-gsl/Makefile

@@ -1,15 +1,18 @@
-# $NetBSD: Makefile,v 1.14 2014/03/13 11:08:51 jperkin Exp $
+# $NetBSD: Makefile,v 1.15 2015/03/08 15:19:13 taca Exp $
 
-DISTNAME=	gsl-1.15.3
+DISTNAME=	rb-gsl-${VERS}
+PKGNAME=	${RUBY_PKGPREFIX}-gsl-${VERS}
 CATEGORIES=	math
 
 MAINTAINER=	[email protected]
-HOMEPAGE=	http://rb-gsl.rubyforge.org/
+HOMEPAGE=	https://github.com/blackwinter/rb-gsl
 COMMENT=	Ruby interface to GNU Scientific Library
 LICENSE=	gnu-gpl-v2 # OR later
 
 DEPENDS+=	${RUBY_PKGPREFIX}-narray>=0.5.9:../../math/ruby-narray
 
+VERS=		1.16.0.4
+
 USE_GCC_RUNTIME=	yes
 
 .include "../../lang/ruby/gem.mk"