PivotX Code

Changing back the preg_replace_callback change as it gave warnings in some places.
Now I suppressed the original warning.

Fixing some warnings in the scheduler.

Fixing some randomly selected warnings.

Fixing some warnings - minor errors.

Fixing various coding warnings.

Leave bonusform parms intact while still not exporting it.
Replace extrafield key fixed string by something that is not similar to a date.
Correcting start defaulting to code that is downward compatible in PHP versions.

Revision 4434 to the branch.

preg_replace no longer supported with /e modifier. Replaced.

Improvements to Bolt docs.

Better default value for $efprefix and minor code clean-up.