* module/language/c99/compiler.mes (struct->fields): Support bit-fields.
(ast->type):
(field-field):
(field-offset):
(expr->accu*):
(expr->accu):
(struct-field):
(->size):
* module/language/c99/info.scm (<bit-field>): New type.
* stage0/x86.M1 (and____$i32,%eax, and____(%edx),%eax,
mov____(%edx),%eax, or____(%edx),%eax): New macro.
* module/mes/as-i386.mes (i386:base-mem->accu): Use
it.
(i386:accu-and, i386:accu-and-base-mem, i386:accu-or-base-mem): New
function.
* module/mes/as-i386.scm: Export them.
* scaffold/tests/7q-bit-field.c: Test it.
* build-aux/check-mescc.sh (tests): Run it.
