Since VS2003, SAFESEH is on by default. We are adding SAFESEH here just to ensure the safe exception tables are generated, fail if it can not.
Following is the comment from Kelly:
Adding the flag makes sure that safe exception tables are always generated, failing the link IF the exception
tables are not safe. Default behavior does not fail the build when they are unsafe, just leaves them out.
So all we are doing is insuring a build failure when they are not safe.
Should not really change anything.