nvtake: add support for '--all'

fixes #60

nvchecker/tools.py

@@ -14,6 +14,8 @@ logger = logging.getLogger(__name__)
 def take():
   parser = argparse.ArgumentParser(description='update version records of nvchecker')
   core.add_common_arguments(parser)
+  parser.add_argument('--all', action='store_true',
+                      help='take all updates')
   parser.add_argument('names', metavar='NAME', nargs='*',
                       help='software name to be updated')
   args = parser.parse_args()
@@ -30,6 +32,9 @@ def take():
   oldvers = core.read_verfile(s.oldver)
   newvers = core.read_verfile(s.newver)
 
+  if args.all:
+    oldvers.update(newvers)
+  else:
     for name in args.names:
       try:
         oldvers[name] = newvers[name]