Description of problem:

DB change:    Add column bugs.cf_issuetracker, Drop bug_cf_issuetracker table:
  
Incidence:    (grep bug_cf_issuetracker *　-r -C4)
 
     Bugzilla/IssueTrackerList.pm-sub _fromDB {
     Bugzilla/IssueTrackerList.pm-    my ($field1, $field2, $id) = @_;
     Bugzilla/IssueTrackerList.pm-    my $result = [];
     Bugzilla/IssueTrackerList.pm-    &::SendSQL(
     Bugzilla/IssueTrackerList.pm:        "SELECT $field1 FROM bug_cf_issuetracker WHERE $field2 = ". &::SqlQuote($id)
     Bugzilla/IssueTrackerList.pm-    );
     Bugzilla/IssueTrackerList.pm-    while (&::MoreSQLData) {
     Bugzilla/IssueTrackerList.pm-        push @$result, &::FetchOneColumn();
     Bugzilla/IssueTrackerList.pm-    }

     Analysis: Above lines is used to query issuetrack info which will be shown in summary section of catalog. This should be modified as query from bugs.cf_issuetracker not from bug_cf_issutracker table anymore when bz3.4 push

     --
     process.cgi-    Bugzilla::DB::LockTables(
     process.cgi-            "LOCK TABLES bugs $write, bugs_activity $write, cc $write, " .
     process.cgi-            "cc AS selectVisible_cc $write, " .
     process.cgi-            "profiles $write, dependencies $write, votes $write, " .
     process.cgi:            "products READ, components READ, bz_it_map $write, bug_cf_issuetracker READ, " .
     process.cgi-            "keywords $write, longdescs $write, bugs_fulltext $write, fielddefs $write, " .
     process.cgi-            "bug_group_map $write, flags $write, duplicates $write," .
     process.cgi-            # user_group_map would be a READ lock except that Flag::process
     process.cgi-            # may call Flag::notify, which creates a new user object,
     
     Analysis: bug_cf_issuetracker table will not exist anymore when bz3.4 push. so will failed to lock a missing table