add all flags for CreateToolhelp32Snapshot

[shekeru]

A commit bc5d600 adding a compatibility header for tlhelp32.h, did not include all the flags for CreateToolhelp32Snapshot.

Description

The intent is to add the remaining flags used by CreateToolhelp32Snapshot.

Motivation and Context

The addition of the rest of the flags used in the library, would prevent errors on older GHC versions.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have not added a new Haskell dependency.
• I have included a changelog entry.
• I have not modified the version of the package in Win32.cabal.

[Mistuke]

Thanks!