SHIM: WindowProc exception handler

Implementation:

Layer: 'DisableUserCallbackException'

This translates to the shim: 'AddProcessParametersFlags',

with the commandline: '80000'

As seen earlier: https://jira.reactos.org/browse/CORE-12111?focusedCommentId=84194&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-84194

This translates to the shim 'AddProcessParametersFlags' simply setting the (hexadecimal) value that is passed to it as commandline in the Peb->ProcessParameters.

To investigate:

• Where is this flag detected (and is the exception handler activated?) --> the most likely place is KiUserCallbackExceptionHandler
• Where is the initial detection done that we need to apply this shim?

More reading:
http://stackoverflow.com/questions/5600735/how-do-i-fix-win7-app-compatibility-shim-with-disableusercallbackexception/5601453#5601453
http://blog.paulbetts.org/index.php/2010/07/20/the-case-of-the-disappearing-onload-exception-user-mode-callback-exceptions-in-x64/