COMP: Bump ImageViewer version.

Includes a more reliable FLTK fetch and improves the
error message when file not found.

Change-Id: I451539e29d483b031114e6af0d872a5b4d013f20
COMP: Fix test signature used by REGISTER_TEST.

char ** is not close enough -- Visual Studio fails to link otherwise.

Change-Id: I808831e90ebd8251c86ec999bc030dbdf8d707cf
Merge topic 'ImageViewerBump'

f010580 COMP: Bump ImageViewer version.
Merge topic 'WindowsTestSignature'

0731254 COMP: Fix test signature used by REGISTER_TEST.