Export type-info symbols.

Export type-info symbols.

Sanitizer tools require type information to catch undefined behavior and
other issues. This wasn't available accross libraries due to the version
script giving them hidden visibility, leading to false positives.

Bug chromium:737384

Change-Id: Iab3e25f4da3672f694e32c1c89278a3fe677d51a
Reviewed-on: https://swiftshader-review.googlesource.com/10728
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Corentin Wallez <cwallez@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>