ui: improve performance for multi-component writes It is more efficient to pass down one large string to the output streams than many small ones. For a ``hg diff`` test case, it improves time from 2m26s to 2m8s. Differential Revision: https://phab.mercurial-scm.org/D1939

cmdutil: drop aliases for logcmdutil functions (API) .. api:: Log-related utility functions has been renamed as follows: - cmdutil.loglimit -> logcmdutil.getlimit - cmdutil.diffordiffstat -> logcmdutil.diffordiffstat - cmdutil._changesetlabels -> logcmdutil.changesetlabels - cmdutil.changeset_printer -> logcmdutil.changesetprinter - cmdutil.jsonchangeset = logcmdutil.jsonchangeset - cmdutil.changeset_templater -> logcmdutil.changesettemplater - cmdutil.logtemplatespec -> logcmdutil.templatespec - cmdutil.makelogtemplater -> logcmdutil.maketemplater - cmdutil.show_changeset -> logcmdutil.changesetdisplayer - cmdutil.getlogrevs -> logcmdutil.getrevs - cmdutil.getloglinerangerevs -> logcmdutil.getlinerangerevs - cmdutil.displaygraph -> logcmdutil.displaygraph - cmdutil.graphlog -> logcmdutil.graphlog - cmdutil.checkunsupportedgraphflags -> logcmdutil.checkunsupportedgraphflags - cmdutil.graphrevs -> logcmdutil.graphrevs - cmdutil._makenofollowlogfilematcher -> logcmdutil._makenofollowfilematcher

logcmdutil: drop redundant "log" from function names (API) A few exceptions: - s/loglimit/getlimit/ to avoid name conflict - s/_logrevs/_initialrevs/ to clarify its functionality