remotefilelog: add newlines to ui.log() invocations

The comment at the top of ui.log() says that the message should be a
newline-terminated string. When using the blackbox logger, if the string does
not end in a newline, the appearance in the file gets quite messy.

This sometimes leaves a string with just the newline as the message, these are
logged by the blackbox logger just fine. I don't know what other loggers do when
logging structured data and a message that is just the newline.

Differential Revision: https://phab.mercurial-scm.org/D5533

hgext/remotefilelog/remotefilectx.py

@@ -226,7 +226,7 b' class remotefilectx(context.filectx):'
             r'reponame': shallowutil.getreponame(repo.ui),
         }
 
-        repo.ui.log('linkrevfixup', 'adjusting linknode', **commonlogkwargs)
+        repo.ui.log('linkrevfixup', 'adjusting linknode\n', **commonlogkwargs)
 
         pc = repo._phasecache
         seenpublic = False
@@ -315,7 +315,7 b' class remotefilectx(context.filectx):'
             return None
         finally:
             elapsed = time.time() - start
-            repo.ui.log('linkrevfixup', logmsg, elapsed=elapsed * 1000,
+            repo.ui.log('linkrevfixup', logmsg + '\n', elapsed=elapsed * 1000,
                         **pycompat.strkwargs(commonlogkwargs))
 
     def _verifylinknode(self, revs, linknode):

hgext/remotefilelog/shallowutil.py

@@ -106,7 +106,7 b' def prefixkeys(dict, prefix):'
 def reportpackmetrics(ui, prefix, *stores):
     dicts = [s.getmetrics() for s in stores]
     dict = prefixkeys(sumdicts(*dicts), prefix + '_')
-    ui.log(prefix + "_packsizes", "", **pycompat.strkwargs(dict))
+    ui.log(prefix + "_packsizes", "\n", **pycompat.strkwargs(dict))
 
 def _parsepackmeta(metabuf):
     """parse datapack meta, bytes (<metadata-list>) -> dict