* gfortran.h (gfc_expr): Move 'operator', 'op1', 'op2', and 'uop'

* gfortran.h (gfc_expr): Move 'operator', 'op1', 'op2', and 'uop'
fields into new struct 'op' inside the 'value' union.
* arith.c (eval_intrinsic): Adapt all users.
* dependency.c (gfc_check_dependency): Likewise.
* dump-parse-tree.c (gfc_show_expr): Likewise.
* expr.c (gfc_get_expr): Don't clear removed fields.
(free_expr0, gfc_copy_expr, gfc_type_convert_binary,
gfc_is_constant_expr, simplify_intrinsic_op, check_init_expr,
check_intrinsic_op): Adapt to new field names.
* interface.c (gfc_extend_expr): Likewise.  Also explicitly
nullify 'esym' and 'isym' fields of new function call.
* iresolve.c (gfc_resolve_dot_product, gfc_resolve_matmul):
Adapt to renamed structure fields.
* matchexp.c (build_node, match_level_1, match_expr): Likewise.
* module.c (mio_expr): Likewise.
* resolve.c (resolve_operator): Likewise.
(gfc_find_forall_index): Likewise.  Only look through operands
if dealing with EXPR_OP
* trans-array.c (gfc_walk_op_expr): Adapt to renamed fields.
* trans-expr.c (gfc_conv_unary_op, gfc_conv_power_op,
gfc_conv_concat_op, gfc_conv_expr_op): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@95471 138bc75d-0d04-0410-961f-82ee72b054a4