Fix for bug 84596: Syncshadowdb wasn't using the db_user and db_pass from localconfig, which meant that it previously wouldn't run unless it was running under a user that had access to the bugs and shadowbugs dbs and didn't have a password.  It now looks for db_user and db_pass and specifies them on the command line to mysqldump and mysql if they're in use.
r= tara

Re-fix for bug 21253: fix calling conventions for syncshadowdb so that a phony parameter to get past the multi-param system() test in tinderbox actually works.
r= tara

Patch by Dave Miller <justdave@syndicomm.com>
r= tara@tequilarista.org

when invoked with -syncall, have the GET_LOCK time out after 45 minutes rather than 1 second, since we want syncall to happen anyway, even if other individual syncs are currently in progress.  r=endico@mozilla.org

DBD.

anything anyway.

shadowdb operations.

busting other people trying to use the system.

bug queries can be run against it, so that these slow queries won't be
able to tie up the rest of the system.