Sync with 1.8.3.3

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --combined Documentation/git.txt
index b738a40e6b0fe740910aa4a919c46ce74f303a69,1f783028bc99349a404d8ad6427c704ccbd1ab81..e9b4922110012eec5b6d5874b81685261565bdd1
--- 1/Documentation/git.txt
--- 2/Documentation/git.txt
+++ b/Documentation/git.txt
@@@ -43,9 -43,10 +43,10 @@@ unreleased) version of Git, that is ava
  branch of the `git.git` repository.
  Documentation for older releases are available here:
  
- * link:v1.8.3.2/git.html[documentation for release 1.8.3.2]
+ * link:v1.8.3.3/git.html[documentation for release 1.8.3.3]
  
  * release notes for
+   link:RelNotes/1.8.3.3.txt[1.8.3.3],
    link:RelNotes/1.8.3.2.txt[1.8.3.2],
    link:RelNotes/1.8.3.1.txt[1.8.3.1],
    link:RelNotes/1.8.3.txt[1.8.3].
@@@ -53,9 -54,9 +54,9 @@@
  * link:v1.8.2.3/git.html[documentation for release 1.8.2.3]
  
  * release notes for
 -  link:RelNotes/1.8.2.3.txt[1.8.2.3].
 -  link:RelNotes/1.8.2.2.txt[1.8.2.2].
 -  link:RelNotes/1.8.2.1.txt[1.8.2.1].
 +  link:RelNotes/1.8.2.3.txt[1.8.2.3],
 +  link:RelNotes/1.8.2.2.txt[1.8.2.2],
 +  link:RelNotes/1.8.2.1.txt[1.8.2.1],
    link:RelNotes/1.8.2.txt[1.8.2].
  
  * link:v1.8.1.6/git.html[documentation for release 1.8.1.6]
@@@ -816,9 -817,8 +817,9 @@@ for further details
  'GIT_FLUSH'::
        If this environment variable is set to "1", then commands such
        as 'git blame' (in incremental mode), 'git rev-list', 'git log',
 -      and 'git whatchanged' will force a flush of the output stream
 -      after each commit-oriented record have been flushed.   If this
 +      'git check-attr', 'git check-ignore', and 'git whatchanged' will
 +      force a flush of the output stream after each record have been
 +      flushed. If this
        variable is set to "0", the output of these commands will be done
        using completely buffered I/O.   If this environment variable is
        not set, Git will choose buffered or record-oriented flushing
@@@ -838,19 -838,6 +839,19 @@@
        as a file path and will try to write the trace messages
        into it.
  
 +'GIT_TRACE_PACK_ACCESS'::
 +      If this variable is set to a path, a file will be created at
 +      the given path logging all accesses to any packs. For each
 +      access, the pack file name and an offset in the pack is
 +      recorded. This may be helpful for troubleshooting some
 +      pack-related performance problems.
 +
 +'GIT_TRACE_PACKET'::
 +      If this variable is set, it shows a trace of all packets
 +      coming in or out of a given program. This can help with
 +      debugging object negotiation or other protocol issues. Tracing
 +      is turned off at a packet starting with "PACK".
 +
  GIT_LITERAL_PATHSPECS::
        Setting this variable to `1` will cause Git to treat all
        pathspecs literally, rather than as glob patterns. For example,