Add gl2ps and qrupdate packages

var/spack/repos/builtin/packages/qrupdate/package.py

@@ -0,0 +1,18 @@
+from spack import *
+
+class Qrupdate(Package):
+    """qrupdate is a Fortran library for fast updates of QR and
+    Cholesky decompositions."""
+
+    homepage = "http://sourceforge.net/projects/qrupdate/"
+    url      = "https://downloads.sourceforge.net/qrupdate/qrupdate-1.1.2.tar.gz"
+
+    version('1.1.2', '6d073887c6e858c24aeda5b54c57a8c4')
+
+    depends_on("openblas")
+
+    def install(self, spec, prefix):
+        configure('--prefix=%s' % prefix)
+
+        make()
+        make("install")