decLibrary.c (__dec_type_swap): Add prototype.

decLibrary.c (__dec_type_swap): Add prototype.

decnumber/
	* decLibrary.c (__dec_type_swap): Add prototype.
	(__dfp_enable_traps, dfp_raise): Delete.
gcc/
	* config/dfp-bit.h (CONTEXT_TRAPS, CONTEXT_ERRORS, DFP_RAISE): Delete.
	* config/dfp-bit.c (dfp_unary_op, dfp_binary_op, dfp_compare_op,
	DFP_TO_DFP, INT_TO_DFP, BFP_TO_DFP): Remove calls to DFP_RAISE.
testsuite/
	* gcc.dg/dfp/snan.c: Delete.

From-SVN: r119068