[Comitted] Add a few testcases

[Andrew Pinski <pinskia at gmail dot com>]

Add a few testcases which I had floating around in a private tree.
Most of these testcases failed in our private tree at one point due to
local changes.  Since it is always good to have more testcases, I
decided to commit them.

I tested all of them on x86_64 with no failures.

Thanks,
Andrew

ChangeLog:
* gcc.c-torture/execute/memset-4.c: New test.
* gcc.c-torture/execute/20110418-1.c: New test.
* gcc.c-torture/execute/20141022-1.c: New test.
* gcc.c-torture/execute/strcpy-2.c: New test.
* gcc.c-torture/execute/20140212-2.c: New test.
* gcc.c-torture/compile/20120913-1.c: New test.
* gcc.c-torture/compile/20121010-1.c: New test.
* gcc.c-torture/compile/20120917-1.c: New test.
* gcc.c-torture/compile/20140110-1.c: New test.
* gcc.c-torture/compile/20121220-1.c: New test.
* gcc.c-torture/compile/20120822-1.c: New test.
* gcc.c-torture/compile/20121027-1.c: New test.
* gcc.c-torture/compile/20120830-2.c: New test.

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