ENYO-2470: trap bogus component in component list of a king
ENYO-2470: transform exception coming from indexer into Error events
ENYO-2470: Analyser raises an error if a file is not found
ENYO-2470: added comment
ENYO-2470: send signal on analyser error ...

yet another hack: errors cannot be bubbled up from runtime-machine.
This object is isolated from the analyser by enyo.loader, so signal are
used to inform user about errors.
Merge pull request #32 from enyojs/ENYO-2470

ENYO-2470: propagate analyser errors

Reviewed-By: Ben Combee (ben.combee@lge.com)