* src/estream.c (X_SAMETHREAD): Move to the top.  Also for the other
 X_constants.
(_gpgrt_fopen): Move setting of FILE_FLAG_SEQUENTIAL_SCAN to ...
(func_file_create_w32): here. Replace arg flags_and_attrs by xflags
and use cflags to set certain properties.
(parse_mode): Add mode keyword "share=rw".