Tweak alias consistency a bit. 'package' has never been documented, but since…

Tweak alias consistency a bit.  'package' has never been documented, but since it works, make it work in both places.
'name' is the preferred form.  Similarly, take 'name' for the 'guest' argument to the 'virt' module.

library/virt

@@ -386,7 +386,7 @@ def main():
         params[k] = v
 
     state      = params.get('state', None)
-    guest      = params.get('guest', None)
+    guest      = params.get('guest', params.get('name', None))
     command    = params.get('command', None)
     options    = params.get('options', [])
 

library/yum

@@ -277,7 +277,7 @@ def main():
     
     module = AnsibleModule(
         argument_spec = dict(
-            pkg=dict(aliases=['name']),
+            pkg=dict(aliases=['name','package']),
             # removed==absent, installed==present, these are accepted as aliases
             state=dict(default='installed', choices=['absent','present','installed','removed','latest']),
             list=dict(choices=['installed','updates','available','repos','pkgspec']),