Fix for alignment of .stab section in sh-pe gas

[Joern Rennecke]

> Actually you are right, this part of the patch was unnecessary, since
> the alignment frag did not affect the overall alinment of the section.

I would expect that it affects the alignment of the stabs / stabn data
within the section.  Which is more important to overall size than the
overall alignment of the section.

> 2000-03-29  Nick Clifton  <nickc@cygnus.com>
> 
> 	* config/tc-sh.h (SEG_NAME): New macro: return the name of a
> 	segment.  Works for both BFD_ASSEMBLER and others.
> 	(SUB_SEGMENT_ALIGN): Use SEG_NAME.

This is OK.