Used str.splitlines() when parsing list of algorithms from xmlsec. (For example, on Windows)

src/saml2/algsupport.py

@@ -42,7 +42,7 @@ def get_algorithm_support(xmlsec):
     pof.wait()
 
     if not p_err:
-        p = p_out.split('\n')
+        p = p_out.splitlines()
         algs = [x.strip('"') for x in p[1].split(',')]
         digest = []
         signing = []