Added an APEX package, but it is still using the git master instead

of a release.

var/spack/packages/apex/package.py

@@ -0,0 +1,30 @@
+from spack import *
+from spack.util.environment import *
+
+class Apex(Package):
+    homepage = "http://github.com/khuck/xpress-apex"
+    #url      = "http://github.com/khuck/xpress-apex/archive/v0.1-release-candidate.tar.gz"
+    url      = "http://github.com/khuck/xpress-apex"
+
+    #version('0.1', '6e039c224387348296739f6bf360d081')
+    version('master', branch='master', git='https://github.com/khuck/xpress-apex.git')
+
+    depends_on("binutils+libiberty")
+    depends_on("boost@1.54:")
+    depends_on("cmake@2.8.12:")
+    depends_on("activeharmony@4.5:")
+
+    def install(self, spec, prefix):
+
+        path=get_path("PATH")
+        path.remove(spec["binutils"].prefix.bin)
+        path_set("PATH", path)
+        with working_dir("build", create=True):
+            cmake('-DBOOST_ROOT=%s' % spec['boost'].prefix,
+                '-DUSE_BFD=TRUE', 
+                '-DBFD_ROOT=%s' % spec['binutils'].prefix,
+                '-DUSE_ACTIVEHARMONY=TRUE', 
+                '-DACTIVEHARMONY_ROOT=%s' % spec['activeharmony'].prefix,
+                '..', *std_cmake_args)
+            make()
+            make("install")