According to the spec glsl4.60.7:
4.4.5. Uniform and Shader Storage Block Layout Qualifiers:
"The packed qualifier overrides only std140, std430, and shared; other qualifiers are inherited.
When packed is used, no shareable layout is guaranteed. The compiler and linker can optimize
memory use based on what variables actively get used and on other criteria. Offsets must be
queried, as there is no other way of guaranteeing where (and which) variables reside within the
block"

we should reserve std140 block and shared block in reflection.

According to the spec glsl4.60.7:
4.4.5. Uniform and Shader Storage Block Layout Qualifiers:
"The row_major and column_major qualifiers only affect the layout of matrices, including all
matrices contained in structures and arrays they are applied to, to all depths of nesting. These
qualifiers can be applied to other types, but will have no effect."

We need ensure all matrix block member been effect.

Support EShMsgKeepUncalled in reflection

EShMsgKeepUncalled  is a link message for link program.
We need only one option to control uncalled function optimization.
If we set EShMsgKeepUncalled as false in link time, linker won't be keep the uncall function sequence in AST,  and if we set EShMsgKeepUncalled as true in link time, linker will keep all uncalled function sequence in AST.
So, in reflecte time, we just only travers all function sequence. It make EShMsgKeepUncalled  only work at linker, and can effect reflection.

Recursively layout packing to "block member"

layout packing isn't set recursively, it causes TReflection::getOffsets doesn't work correctly.

* Update tests according to spirv-opt update

We refactored function inlining pass of spirv-opt and it results in
different numbering of result ids in SPIR-V code. This commit updates
test cases to avoid a test failure according to the spirv-opt update.

* Update known good

Fix Web build

Explicitly mark EShLanguageMask as unsigned

This allows casting from and to any unsigned value, previously this was
undefined behavior.

This fixes ubsan complaining in `TParseContext::layoutQualifierCheck`,
where `~EShLangComputeMask` is used.

Noticed this when looking at swizzles.  It's at least better structure,
removing hard-to-see early returns, which might be contributing to bugs.

Add support for es extension GL_EXT_blend_func_extended

Add support for extension GL_EXT_shader_implicit_conversions

* Introduces builtin variables gl_SecondaryFragColorEXT and gl_SecondaryFragDataEXT
* Introduces builtin constant gl_MaxDualSourceDrawBuffersEXT
* enables support for layout qualifier "index" in es profile

Updated extension management in TIntermediate class.

This variable is no longer used, remove.

Enable below features for GL Core version 420:
* layout qualifier "std430"
* storage qualifier "buffer"
* atomic memory functions

Swizzled out operands were added in bbbd9a2a. This was sufficient
for most tests, but we ran into problems with umulExtended and
imulExtended, which have two.

This CL converts the tracking values to vectors so multiple operands
can be supported.

Test: KHR-GLES31.core.shader_bitfield_operation.*
Test: ctest

Fixes issue #2169.

This is causing downstream users compiler errors if they have Werror or other
particularly restrictive flags turned on.

* rework how shader interface block naming rules are handled

* Fixes 2136

According to the spec, shader interfaces (uniform blocks, buffer
blocks, input blocks, output blocks) all should be matched up via
their block names across all compilation units, not instance names.
Also, all block names can be re-used between all 4 interface types
without conflict. This change makes it so all of these blocks are
matched and remapped using block name and not by instance name.
Additional the rule that matched uniform and buffer blocks must
either be anonymous or named (but not nessearily the same name) is
now imposed.

* add warning if instance names differ between matched shader interfaces

* Add test cases from #2137 which is now fixed as well.

* replace some tab characters with spaces

* buffer blocks and uniform blocks now share the same block namespace

Error out assignments to objects of rayQueryEXT type.