[PATCH] fix for unexec bootstrap fail on darwin

[Mike Mattie]

hello,

I ran into "not enough room for load commands for new __DATA  
segments" from unexecmacosx.c
while bootstrapping yesterday. I increased the room for load commands  
from 30, to 40 and acheived
a successful bootstrap.

I did not know exactly how much room was required so increasing the  
padding by 10 commands
is a guess. otool -l src/emacs shows 43 load commands after bootstrap  
completed.

I have included a one-liner fix with my solution.

emacs-unexec-fix.diff
Description: Binary data

A complete patch requires modifying comments in darwin.h and  
unexecmacosx.c . I chose not
to so that the patch would remain below the limit for legal paperwork.

I have also ran into the "pure storage overflow" problem after my  
fix, I will address that subsequently
if appropriate after some RTFM'ing.

Cheers,
Mike Mattie