[Buildbot] #2818: [nine] rewrite buildsteps to not write to status

[Buildbot trac]

#2818: [nine] rewrite buildsteps to not write to status
------------------------+---------------------
Reporter:  dustin       |       Owner:  dustin
    Type:  enhancement  |      Status:  new
Priority:  major        |   Milestone:  0.9.0
 Version:  0.8.7p1      |  Resolution:
Keywords:               |
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Comment (by dustin):

 * remove progress/ETA support (I think there's already a bug to re-add
 this in a more functional fashion)
 {{{
 commit d830cde7a802e7613d088ac766eb3ea7443999ba
 Author: Dustin J. Mitchell <dustin at buildbot.net>
 Date:   Sun Oct 19 17:14:08 2014 -0400

     Remove Progress/ETA support.

     This is part of removing the reliance on status APIs in bug 2818.  The
     progress interface wasn't very good, anyway, and will be re-
 implemented
     in bug 2590.
 }}}
 * remove master/buildbot/status/buildstep.py, moving it to
 buildbot.util.pickle
 {{{
 commit 8b72fb079f74ff380e2bdb50e2b42d188a318f85
 Merge: 97a0944 4c12a18
 Author: Pierre Tardy <pierre.tardy at intel.com>
 Date:   Thu Oct 2 15:31:48 2014 +0200

     Merge branch 'bug2818' of github.com:djmitche/buildbot into pr1238

 }}}
 * convert stepStateStrings to take only a single string, since that's all
 we produce with the summary handling
 {{{
 commit 32a8eba59c09aa3716ee09acf8c1d346600308d1
 Merge: d7badd3 69b22d2
 Author: Mikhail Sobolev <mss at mawhrin.net>
 Date:   Tue Oct 21 10:33:37 2014 +0300

     Merge pull request #1269 from djmitche/bug2818b

     Change state_strings to state_string

     See ticket:2818
 }}}

 So, still todo:
 * add data API support for hidden steps

--
Ticket URL: <http://trac.buildbot.net/ticket/2818#comment:11>
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