Make svn_wc__delete_many properly handle deletions of multiple targets withconflict markers by storing them in a guaranteed stable way.Instead of fixing the original logic to store markers from multiple targetsjust create work items to make svn_wc__delete and svn_wc__delete_manyhandle all deletes in an atomic way.* subversion/libsvn_wc/adm_ops.c (create_delete_wq_items): New function, extracted from ... (svn_wc__delete_many, svn_wc__delete_internal): ... these functions which now just install wq items instead of using in-memory state.* subversion/libsvn_wc/wc_db.c (op_delete_many_baton_t): Add work_items and delete_dir_externals flags. (op_delete_many_txn): Install work items and note a todo. (svn_wc__db_op_delete_many): Update caller.* subversion/libsvn_wc/wc_db.h (svn_wc__db_op_delete_many): Add arguments.