Move tests of sincos from libm-test.inc to auto-libm-test-in.

Move tests of sincos from libm-test.inc to auto-libm-test-in.

This patch moves tests of sincos to auto-libm-test-in, adding the
required support to gen-auto-libm-tests.

Tested x86_64 and x86 and ulps updated accordingly.

(auto-libm-test-out diffs omitted below.)

	* math/auto-libm-test-in: Add tests of sincos.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (sincos_test_data): Use AUTO_TESTS_fFF_11.
	* math/gen-auto-libm-tests.c (func_calc_method): Add value
	mpfr_f_11.
	(func_calc_desc): Add mpfr_f_11 union field.
	(test_functions): Add sincos.
	(calc_generic_results): Handle mpfr_f_11.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.