Bug Fix: When a glyph failed to load in FreeTypeFont, although we logged the error we did not work around the issue of the missing glyph image, so a seg fault was generated upon attempted use of those missing images.  This addresses the issue by creating dummy images for missing font glyphs which use a zero size.  Mantis #0000125.
Bug Fix: When a glyph failed to load in FreeTypeFont, although we logged the error we did not work around the issue of the missing glyph image, so a seg fault was generated upon attempted use of those missing images.  This addresses the issue by creating dummy images for missing font glyphs which use a zero size.  Mantis #0000125.

ruleless/CEGUI,OpenTechEngine/CEGUI,OpenTechEngine/CEGUI,OpenTechEngine/CEGUI,ruleless/CEGUI,OpenTechEngine/CEGUI,ruleless/CEGUI,ruleless/CEGUI