Re: /srv/bzr/emacs/emacs-24 r111251: * pre-crt0.c (data_start): Initialize to 1.

[Glenn Morris]

Paul Eggert wrote:

>   * pre-crt0.c (data_start): Initialize to 1.
>   
>   This ports to compilers that optimize the external declaration
>   'int x = 0;' as if it were 'int x;' to shrink the executable.

IIUC, this is in srervice of trying to port Emacs to an platform where
it has never worked (AIX 64-bit). But the code is used by other, working
platforms. Why is this change safe/necessary for emacs-24 at this late
stage?