- Version exposed with each extension is the revision of the extension
  itself, not the API version.

- Instance and device extensions must be exposed in the correct lists

- Handle VK_INCOMPLETE case

V2: Also handle excessive count

Bug: b/116336664
Change-Id: I97ad644359b761142f397855e49c0651181b3e77
Reviewed-on: https://swiftshader-review.googlesource.com/c/21968Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Chris Forbes <chrisforbes@google.com>