loader: Replace overzealous warnings with info

The new ICD search functionality was logging warnings in some places
where information was more appropriate, such as when opening a device
or for some errors that simply indicated that the new format is not
supported yet.

Change-Id: Ifc8ce33d778783f3f55102783bf6ede0dd7c2a00

layers: Update PV codegen for Windows warning

Code gen declarations of allowed_structs in nested scopes could cause
warnings in Windows.  Modified codegen to append the type name to
allowed_structs (eg allowed_structs_VkGraphicsPipelineCreateInfo) to
avoid name collisions.

Change-Id: I40bd57ff34dcd1df01d3606c79dacbe06b00f464

demos: Modify correct uniform buffer for next frame

Change-Id: I78b8f5ef63fb2c14a3ce431f3e6f6a809e65972f

winsdk: Fix missing vulkaninfo file extension

Change-Id: I9cef2172ed568372bca512d597099c37e4f0766e

externals: Update to glslang fix commit

layers: Fix template_update errors in CV

Tied UpdateDescriptorSetWithTemplate into UpdateDescriptorSet
validation.

Change-Id: I00fdd9b90f99b34bb7119eb9c8dd433571f22f1d

build: More Android fixes

loader: Update the loader to 1.0.39

Add new extensions for 1.0.39.  Also, updated layers to include
minimal set of functionality for 1.0.39 extensions. Extensions include:
 - VK_KHR_get_physical_device_properties2
 - VK_KHR_shader_draw_parameters
 - VK_EXT_direct_mode_display
 - VK_EXT_display_surface_counter
 - VK_EXT_display_control

Also, redo the LoaderAndLayerIf document.

Change-Id: I10412086da7a798afe832a3892e18f606259b5af

loader: Update the loader to 1.0.39

Add new extensions for 1.0.39.  Also, updated layers to include
minimal set of functionality for 1.0.39 extensions. Extensions include:
 - VK_KHR_get_physical_device_properties2
 - VK_KHR_shader_draw_parameters
 - VK_EXT_direct_mode_display
 - VK_EXT_display_surface_counter
 - VK_EXT_display_control

Also, redo the LoaderAndLayerIf document.

Change-Id: I10412086da7a798afe832a3892e18f606259b5af

loader: Fix issue with new extensions

We weren't properly checking for all instance extension names.

Change-Id: Id46efe55a92649de407315cd22455065504fe70b