Merge pull request KhronosGroup#1405 from Igalia/nroberts/amb-arrays

Take into account arrays of opaque types with --auto-map-bindings

Merge pull request KhronosGroup#1381 from LoopDawg/coverage_array

HLSL: require coverage mask to be arrayed output.

First candidate stable version of Vulkan 1.1.

Last stable 5.1.* version.

Last stable 5.0.* version.

Non-functional: Fix commit 98f164e.

Fix previous commit to not use tabs and otherwise match local coding
conventions better.

Merge pull request KhronosGroup#88 from mgadams/unistd_removal

Remove obsolete unistd.h file

Backward incompatible: Turn on PureOperatorBuiltins: use only enum-ba…

…sed built-in functions in the AST.

If this breaks your AST consumer, best is to modify it to test
against the enum values instead of doing string comparisons on
built-in function names.  This is the reason the change was made.

If you need the old behavior, you should be able to get it back by changing
PureOperatorBuiltins to be false instead of true.  This path will work for
a while, but is marked deprecated.

Also, the old behavior is tagged as release 2.4.

Create last version before moving to pure enums for built-in functions.

Last version of SPIR-V 30, before going to SPIR-V 31.