Patch to gas/read.c to control implicit lcomm alignment

[Ian Lance Taylor]

   Date: Sat, 11 Mar 2000 00:10:18 +0100
   From: Hans-Peter Nilsson <hans-peter.nilsson@axis.com>

   Sat Mar 11 00:01:39 2000  Hans-Peter Nilsson  <hp@axis.se>

	   * read.c (s_lcomm_internal): Wrap implicit alignment in #ifndef
	   NO_IMPLICIT_LCOMM_ALIGNMENT. 

Don't make macros negative.  That makes it harder to understand how to
use them.  Make it IMPLICIT_LCOMM_ALIGNMENT, and give it a default of
1.

However, in this case, I think a better fix would be a macro which
takes the size and returns the alignment.  The current code could be
the default implementation of that macro.

Document new macros in gas/doc/internals.texi.

Thanks.

Ian