m68k section alignment

[Vincent Rivière]

Hi.

Currently, gas produces object files for m68k which are aligned to 4 
bytes. I think this is too much, because the highest aligment required 
for the cpu is 2 bytes.

The attached patch sets the default alignment to 2 bytes for all the 
m68k targets.

Thus, the size of the sections in the generated object files are minimal.

$ cat nop.s
         nop

$ as-new nop.s -o nop.o
$ objdump -h nop.o

nop.o:     file format a.out-m68k-netbsd

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
   0 .text         00000002  00000000  00000000  00000020  2**1
                   CONTENTS, ALLOC, LOAD, CODE
   1 .data         00000000  00000002  00000002  00000022  2**1
                   CONTENTS, ALLOC, LOAD, DATA
   2 .bss          00000000  00000002  00000002  00000000  2**1
                   ALLOC

Note that before this patch, the .text section size was 4-byte long : 2 
bytes for the nop, plus 2 filler bytes.

If everyone think it's OK, this patch may be committed.

Regards,

Vincent Rivière
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