(md_parse_option): If OBJ_ELF, check for -K. Die if -K PIC, since
PIC code is not currently supported.
* as.c (parse_args): Change std_shortopts to be an array rather
than a constant string. Only include 'K' if WORKING_DOT_WORD is
not defined. Only check for 'K' in that case as well.
* as.h (flag_warn_displacement): Only declare if WORKING_DOT_WORD
is not defined.
PR 7131.