Update to version 4.1.0 (#785)

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

@@ -5,6 +5,7 @@ class Jemalloc(Package):
     homepage = "http://www.canonware.com/jemalloc/"
     url      = "https://github.com/jemalloc/jemalloc/releases/download/4.0.4/jemalloc-4.0.4.tar.bz2"
 
+    version('4.1.0', 'c4e53c947905a533d5899e5cc3da1f94')
     version('4.0.4', '687c5cc53b9a7ab711ccd680351ff988')
 
     variant('stats', default=False, description='Enable heap statistics')
@@ -20,5 +21,8 @@ def install(self, spec, prefix):
 
         configure(*configure_args)
 
+        # Don't use -Werror
+        filter_file(r'-Werror=\S*', '', 'Makefile')
+
         make()
         make("install")