M4 release without dependency on Extension Library

Adds:

• xsp.openlog.suppressStackTrace to suppress stack trace from Event logs.
• Capturing NotesException and java.io.IOException classes in SSJS errors.
• try/catch to ensure any other classes not identified are still caught.

Because 8.5.3 and UP1 have been out for 18 months, this may be the last non-Ext Lib release