Works round fact that OpenCore XML parser does not
automatically decode any XML entities.

When triggered, this:
 - Looks wrong
 - Disables ESC and SPACE
 - Can hide the menu completely (if triggered early)

to better match newer macOS.
Add OC_ATTR_USE_REVERSED_UI bit to use old layout.

Which was designed to avoid warnings caused by apparently unused
variables when DEBUG statements are compiled with MDEPKG_NDEBUG
defined, but which is actually causing compilation errors with
improved DEBUG macro.

and PcdImageProtectionPolicy, adjusted Policy in tools.

OcPeCoffExtLib: Add code path to OcPeCoffFixupInitializeContext which generates fixed image context without fixing image in memory
 - Required to allow AppleEfiSignTool to verify rare (but actually existing) Apple signed binaries with overlapping section errors

test for sutiability for fixup for all loaded images, not just boot image