comimpl.xsl: Use xsl:key + key() to access //interfaces[@name=?] and //enum[@name=?]. Also, inserted a new-output-buffer command.

Main/Event: wrapper conversion, not covering the automatically generated event implementations

Workaround for crash receiving ISnapshotDeletedEvent, ISnapshotCreatedEVent and a bunch of other 'empty' event interfaces when using VBOX_WITH_MIDL_PROXY_STUB=1.

Main/idl/comimpl.xsl: fix long standing bug (only visible with XPCOM) where the code generator produces wrong list of implemented interfaces, causing errors with QueryInterface, plus fixing a few places where @ was used where $ is more logical

Main: API event for multitouch input.

Main/glue+idl+webservice: move the type mapping XSLT include file to a central place, it is not webservice specific, and extend it slightly

whitespace/comment touchup

nits.

Main: pass in safearrays as SAFEARRAY*

Main: event code generator typos

Main. QT/FE: fix long standing COM issue

Main: better type checks when firing events

windows burn

event: bits of additional paranoia

events: more on reusability

events: vacation-time idea of reusable events (for perfomance-critical operations)

events: support for raw pointers too

Main: remove SupportErrorInfo template magic

Main, some frontends: removing callbacks

Main: safearray event attributes work

Main: console events, sample of veto events use (enabled by default, could be pretty dangerous, report issues into 4975)

Main: further events work, setters, part of safearrays

Main: veto event class, more events

Main: events work, firing of events enabled

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