FYI: TestSecurityManager enhancement

[Gary Benson <gbenson at redhat dot com>]

Hi again,

This commit makes the test security manager inhibit checks except
within testcases.  It relies on the fact that all testcases must begin
with a call to prepareChecks() and end either when checkAllChecked()
is called or when checkPermission() throws an exception.  Because it
is known when testcases start and end, we can inhibit checking outside
of testcases.  This stops the security manager stomping on GCJ's line
number process, as well allowing a bunch of hacks to be removed.

Cheers,
Gary

Attachment: patch
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