* expr.c: call save_expr on array for correct evaluation order,
modified comment, fixed indentation.
* parse.y: (patch_assignment): Correctly extract the array base
from the tree generate by build_java_arrayaccess, added comments.
(patch_array_ref): Remove SAVE_EXPR on ARRAY_REF.
Fixes PR java/3096, PR java/3803, PR java/3965.