This reverts commit ef377816, now that
constructor function support for singleton implementations is in place and the
proper singleton theGlobalEventBroadcaster has been introduced (and drops
sfx_component_getFactory completely, which had become unused except for
SfxGlobalEvents_Impl in the meantime).

Change-Id: I2d587989dd0a1fbea6fe75f7dc2af954ac81c4ed