checkupdates: fix --auto build copy

Also, remove origlines which hasn't been used in some time.

fdroidserver/checkupdates.py

@@ -29,6 +29,7 @@ import traceback
 import HTMLParser
 from distutils.version import LooseVersion
 import logging
+import copy
 
 import common
 import metadata
@@ -468,9 +469,7 @@ def checkupdates_app(app, first=True):
                 logging.info("Refusing to auto update, since the latest build is newer")
 
             if not gotcur:
-                newbuild = latest.copy()
-                if newbuild.origlines:
-                    del newbuild.origlines[:]
+                newbuild = copy.deepcopy(latest)
                 newbuild.disable = False
                 newbuild.vercode = app.CurrentVersionCode
                 newbuild.version = app.CurrentVersion + suffix

fdroidserver/metadata.py

@@ -1066,7 +1066,6 @@ def parse_txt_metadata(metadatapath):
         if len(parts) < 3:
             raise MetaDataException("Invalid build format: " + v + " in " + metafile.name)
         build = Build()
-        build.origlines = lines
         build.version = parts[0]
         build.vercode = parts[1]
         if parts[2].startswith('!'):