limits-fndefn.c: Skip for AVR.

limits-fndefn.c: Skip for AVR.

* gcc.c-torture/compile/limits-fndefn.c: Skip for AVR.
* gcc.dg/builtins-config.h: Use standard independent __AVR__ symbol.
* gcc.dg/cdce1.c: Skip for AVR.
* gcc.dg/cdce2.c: Ditto.
* gcc.dg/fold-bitand-1.c: Ignore warnings such as alignment.
* gcc.dg/fold-eqandshift-3.c: Use long on AVR.
* gcc.dg/fold-overflow-1.c: Skip for AVR.
* gcc.dg/multiple-overflow-warn-3.c: Use target independent macro for ms bit position.
* gcc.dg/pch/struct-1.c: Allow for target without 32 bit int.
* gcc.dg/tree-ssa/pr33920.c: Add warning check for AVR.
* gcc.dg/ucnid-5.c: Skip for AVR.
* gcc.dg/Wconversion-5.c: Mark warning xfail for AVR target.
* gcc.dg/Wconversion-real-integer.c: Skip for AVR.
* gcc.dg/Wconversion-real.c: Ditto.
* gcc.dg/wtr-conversion-1.c: Add warning test for AVR.
* gcc.dg/utf-cvt.c: Skip tests and mark excess xfail for AVR.
* gcc.dg/Wtype-limits-Wextra.c: Ditto.
* gcc.dg/Wtype-limits.c: Ditto.

From-SVN: r136918