Add git support to which_scm utility

          --- old/usr/src/tools/scripts/which_scm.1
          +++ new/usr/src/tools/scripts/which_scm.1

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  24   24  .\" ident       "%Z%%M% %I%     %E% SMI"
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  26   26  .TH which_scm 1 "11 April 2008"
  27   27  .SH NAME
  28   28  which_scm \- Report Source Code Management system
  29   29  .SH SYNOPSIS
  30   30  .B which_scm
  31   31  
  32   32  .SH DESCRIPTION
  33   33  .B which_scm
  34   34  detects the Source Code Management (SCM) system in use, and prints a
  35   35  single line of text containing a one-word name for the SCM, followed
  36   36  by a space, and then the top-level directory path for the workspace.
  37   37  
  38   38  The typical usage within a ksh script is:
  39   39  .nf
  40   40          which_scm | read SCM_TYPE CODEMGR_WS || exit 1
  41   41  .fi
  42   42  
  43   43  If CODEMGR_WS is set in the environment, then \fBwhich_scm\fR

  44   44  checks only that directory, assuming that it is the top of the tree.
  45   45  
  46   46  If CODEMGR_WS is not set, then \fBwhich_scm\fR searches upwards to
  47   47  find the containing workspace path, and reports that path.
  48   48  
  49   49  .B which_scm
  50   50  can detect the following types of SCM systems (these are the keywords
  51   51  used in the output format):
  52   52  .nf
  53   53          cvs
       54 +        git
  54   55          mercurial
  55   56          rcs
  56   57          sccs
  57   58          subversion
  58   59          teamware
  59   60  .fi
  60   61  
  61   62  If the type of SCM in use is not known, then the string "unknown" is
  62   63  printed, and the path returned is $CODEMGR_WS (if set) or the current
  63   64  working directory.  The command may exit with an error if the SCM

  64   65  could be detected, but is unusable.

  65   66  
  66   67  .SH ENVIRONMENT VARIABLES
  67   68  The following environment variable is used by \fBwhich_scm\fR:
  68   69  
  69   70  .PP
  70   71  \fBCODEMGR_WS\fR path to current workspace.
  71   72  
  72   73  .SH SEE ALSO
  73   74  .IR cvs(1) ,
  74   75  .IR hg(1) ,
       76 +.IR git(1) ,
  75   77  .IR sccs(1)
  76   78  .IR svn(1) ,
  77   79  .IR workspace(1)
    

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