Fix mxml (#3639)

mxml is now hosted on GitHub.

lib/spack/spack/url.py

@@ -370,6 +370,7 @@ def parse_name_offset(path, v=None):
         (r'/([^/]+)/(tarball|zipball)/', path),
         (r'/([^/]+)[_.-](bin|dist|stable|src|sources)[_.-]%s' % v, path),
         (r'github.com/[^/]+/([^/]+)/archive', path),
+        (r'github.com/[^/]+/([^/]+)/releases', path),
         (r'[^/]+/([^/]+)/repository/archive', path),  # gitlab
         (r'([^/]+)/download.php', path),
 

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

@@ -31,8 +31,8 @@ class Mxml(AutotoolsPackage):
     non-standard libraries.
     """
 
-    homepage = "http://www.msweet.org"
-    url = "http://www.msweet.org/files/project3/mxml-2.9.tar.gz"
+    homepage = "http://michaelrsweet.github.io/mxml/"
+    url      = "https://github.com/michaelrsweet/mxml/releases/download/release-2.10/mxml-2.10.tar.gz"
 
     version('2.10', '8804c961a24500a95690ef287d150abe')
     version('2.9', 'e21cad0f7aacd18f942aa0568a8dee19')
@@ -41,6 +41,9 @@ class Mxml(AutotoolsPackage):
     version('2.6', '68977789ae64985dddbd1a1a1652642e')
     version('2.5', 'f706377fba630b39fa02fd63642b17e5')
 
+    def url_for_version(self, version):
+        return "https://github.com/michaelrsweet/mxml/releases/download/release-{0}/mxml-{0}.tar.gz".format(version)
+
     # module swap PrgEnv-intel PrgEnv-$COMP
     # (Can use whatever compiler you want to use)
     # Case statement to change CC and CXX flags