HasGDIPlus was not working properly.
Fix for 301: GDIPlusActive = false when HasGDIPlus = true
302: 	Compilation warnings in GDIPL2A.pas
Add .TIF support for img tag.  This requires GDI+.
Indicate that we can support EMF and WMF metafiles.
Indicate support for various alternative file extensions and some minor file format differences.
Indicate support for .ico format.
Changed: comment
Merge branch 'HtmlViewer-11.4-to-11.5' of https://github.com/JPeterMugaas/HtmlViewer.git into HtmlViewer-11.4-to-11.5