GCC: extend.texi, 1.2 -> 1.3

[Jan-Benedict Glaw]

Update of /mnt/vax-development/CVS_Repository/gcc/gcc/doc
In directory mail:/mnt/vax-development/local_work/work-jbglaw/local-cvs/gcc/gcc/doc

Modified Files:
	extend.texi 
Log Message:
- - - -- -- A U T O M A T I C   C H E C K I N -- -- - - -
	2004-08-16  Janis Johnson  <janis187 at us.ibm.com>
	
	* doc/extend.texi (AltiVec builtins): Document additional differences
	from the Motorola AltiVec PIM.