[COMMITTED] Fold all statements in Ranger VRP.

[Andrew MacLeod]

This patch changes the ranger VRP pass to simplify all statements, not 
just the ones with ranges.  I believe Jeff had mentioned we were no 
longer doing this a while back.  Now we need it when running as the VRP2 
pass to satisfy the testcase: gcc.dg/wrapped-binop-simplify.c

This also requires a testcase adjustment since EVRP will now perform 
this simplification, and it causes a test looking for it in VRP1 to 
fail.  In that test, I simply disable evrp, and then add a duplicate of 
the test which then tests that EVRP also performs the optimization.

Bootstrapped on x86_64-pc-linux-gnu with no regressions. Pushed.

Andrew

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