xroar: update to 1.5.3

[cmitu]

New features in version 1.5:

• Add ability to change Picture Area, seeing more or less border
• New option -vo-picture
• Respect -geometry dimensions in SDL-based UIs
• Add optional 60Hz vertical scaling (on by default)
• New option -no-vo-scale-60hz disables 60Hz scaling
• Faster ROM intercept based printing on CoCo and MC-10
• GIME: respect X offset and HVEN in COCO mode
• MPI slot config moved from global to per-cart, included in -config-print
• Add screenshot to PNG from menu or Control+Shift+S
• Fix printing after switching machines [Jak Fearon]
• Better rendering of paths in Windows dialogs
• Fix some CoCo 3 cartridge behaviour [Christian Haitian]
• GIME: reset video address later (fixes Androne) [Russ Le Blang]
• GIME: fix various $FExx access problems