Remove some cruft.

The ipcclean and multiroot options were long dead. The header comment
was out of date and now just points to the Wiki and the Github repo.

Also a line in the help text for skip-steps was added.

PGBuild/Options.pm

@@ -20,7 +20,7 @@ use vars qw(@option_list);
 BEGIN
 {
     @option_list =qw(
-      $forcerun $buildconf $keepall $ipcclean $help $multiroot
+      $forcerun $buildconf $keepall $help
       $quiet $from_source $from_source_clean $testmode
       $test_mode $skip_steps $find_typedefs
       $nosend $nostatus $verbose
@@ -38,8 +38,8 @@ use vars qw($VERSION); $VERSION = 'REL_4.7';
 @EXPORT_OK   = ();
 
 our (
-    $forcerun, $buildconf, $keepall, $ipcclean,
-    $help, $multiroot,$quiet, $from_source,
+    $forcerun, $buildconf, $keepall,
+    $help, $quiet, $from_source,
     $from_source_clean, $testmode,$test_mode, $skip_steps,
     $find_typedefs,$nosend, $nostatus, $verbose,
 );
@@ -54,14 +54,12 @@ my (%standard_options);
     'force' => \$forcerun,
     'find-typedefs' => \$find_typedefs,
     'keepall' => \$keepall,
-    'ipcclean' => \$ipcclean,
     'verbose:i' => \$verbose,
     'nostatus' => \$nostatus,
     'test' => \$testmode,
     'help' => \$help,
     'quiet' => \$quiet,
     'skip-steps=s' => \$skip_steps,
-    'multiroot' => \$multiroot,
 );
 
 $buildconf = "build-farm.conf"; # default value

run_build.pl

@@ -20,36 +20,13 @@
 
  AUTHOR: Andrew Dunstan
 
- USAGE:
+ DOCUMENTATION:
 
-   To upload results, you will need a name/secret
-   to put into the config file. Test runs without
-   uploading results can be done using the --nosend 
-   commandline flag.
+  See http://wiki.postgresql.org/wiki/PostgreSQL_Buildfarm_Howto
 
-   Install this file, run_web_txn.pl and build-farm.conf in some
-   directory together. Edit build-farm.conf to match
-   your setup. Create the buildroot directory.
-   Run "perl -cw build-farm.conf" to make sure it
-   is OK. Run "perl -cw run_build.pl" to make sure
-   you have all the required perl modules. Make a
-   test run in the foreground (can take up to an hour
-   on a slow machine). Add cron entries that look
-   like this:
+ REPOSITORY:
 
-   # check HEAD branch once an hour
-   32 * * * * cd /path/to/script && ./run_build.pl 
-   # check REL7_4_STABLE branch once a week
-   18 3 * * 3 cd /path/to/script && ./run_build.pl REL7_4_STABLE
-
-   There is provision in the conf file for support of 
-   ccache. This is highly recommended.
-
-   For more extensive information, see docs and mailing list
-   at the pgfoundry site: http://pgfoundry.org/projects/pgbuildfarm/
-
-   See the results of our labors at 
-   http://www.pgbuildfarm.org/cgi-bin/show_status.pl 
+  https://github.com/PGBuildFarm/client-code
 
 =cut
 
@@ -244,11 +221,6 @@
     $scm->check_access($using_msvc);
 }
 
-if ($multiroot)
-{
-    warn "--multi-root is no longer necessary, and is deprecated";
-}
-
 my $st_prefix = "$animal.";
 
 my $pgsql = $from_source  || $scm->get_build_path($use_vpath);
@@ -397,10 +369,6 @@ END
             }
             chdir $branch_root;
         }
-        if ($ipcclean && -x "$pgsql/src/bin/ipcclean/ipcclean")
-        {
-            system("$pgsql/src/bin/ipcclean/ipcclean >$devnull 2>&1");
-        }
         if ( !$from_source && $keep_errs)
         {
             print "moving kept error trees\n" if $verbose;
@@ -787,8 +755,8 @@ sub print_help
   --keepall                 = keep directories if an error occurs
   --verbose[=n]             = verbosity (default 1) 2 or more = huge output.
   --quiet                   = suppress normal error message 
-  --ipcclean                = clean up shared memory on failure
   --test                    = short for --nosend --nostatus --verbose --force
+  --skip-steps=list         = skip certain steps
 
 Default branch is HEAD. Usually only the --config option should be necessary.