2013-03-08 Chung-Lin Tang <cltang@codesourcery.com>

2013-03-08  Chung-Lin Tang  <cltang@codesourcery.com>

	* write.h (struct fix): Add fx_dot_frag field.
	(dot_frag): Declare.
	* write.c (dot_frag): New variable.
	(fix_new_internal): Set fx_dot_frag field with dot_frag.
	(fixup_segment): Base calculation of fx_offset with fx_dot_frag.
	* expr.c (expr): Save value of frag_now in dot_frag when setting
	dot_value.
	* read.c (emit_expr): Likewise. Delete comments.