[patch] fix C++ warning bootstrap on sparc

[Andreas Tobler]

Hello all,

the attached patch fixes bootstrap on sparc solaris and I assume also on 
x86 solaris.

It has been tested on sparc-solaris2.8/10, darwin-x86/ppc, linux-ppc and 
hppa2.0w-hp-hpux11.11/hppa64--hp-hpux11.11.

I'm not sure if the caddr_t is available everywhere. If not we might 
need to add configury magic.

Ok for main if caddr_t is available everywhere?

Thanks,
Andreas

And thanks to Kaveh for pointing me in the right direction.

2008-07-01  Andreas Tobler  <a.tobler@schweiz.org>

	* ggc-common.c (mmap_gt_pch_get_address): Fix -Wc++-compat warnings.
	(mmap_gt_pch_use_address): Likewise.
	* config/host-solaris.c (sol_gt_pch_use_address): Likewise.
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