API extension: add GCC_JIT_UNARY_OP_ABS to enum gcc_jit_unary_op

API extension: add GCC_JIT_UNARY_OP_ABS to enum gcc_jit_unary_op

gcc/jit/ChangeLog:
	* docs/topics/expressions.rst (Unary Operations): Add
	GCC_JIT_UNARY_OP_ABS.
	* jit-playback.c (gcc::jit::playback::context::new_unary_op):
	Likewise.
	* jit-recording.c (unary_op_strings): Likewise.
	* libgccjit.c (gcc_jit_context_new_unary_op): Update checking
	of "op" to reflect addition of GCC_JIT_UNARY_OP_ABS.
	* libgccjit.h (enum gcc_jit_unary_op): Add GCC_JIT_UNARY_OP_ABS.
	* docs/_build/texinfo/libgccjit.texi: Regenerate.

gcc/testsuite/ChangeLog:
	* jit.dg/test-expressions.c (make_tests_of_unary_ops): Add test of
	GCC_JIT_UNARY_OP_ABS.
	(verify_unary_ops): Likewise.

From-SVN: r219321