The Darwin lisp kernel should build using 10.5 and 10.6 SDKs

[rme]

There are a few little details that prevent the Darwin lisp kernel from building when using SDKs newer than 10.4. We ought to correct these.

[rme]

r13206 and r13207 enable the lisp kernel to be built using the 10.5 SDK.

It doesn't work to use the 10.6 SDK yet. We take our first exception and end up in the handler, but I think that something may go awry in the process of trying to return from the exception.

[rme]

I saw a post on sbcl-devel, namely  http://permalink.gmane.org/gmane.lisp.steel-bank.devel/14237, which indicates that Mac OS X 10.6 changed struct stat.

Compiling a lisp kernel with the 10.6 SDK works if we supply -D_DARWIN_NO_64_BIT_INODE. On 10.5, the new struct stat is apparently available by specifying "-D_DARWIN_USE_64_BIT_INODE".

Perhaps with 1.5 we should ship Leopard interfaces, build the lisp kernel with the 10.5 SDK, and leave some kind of note in the lisp kernel Makefiles about the -D_DARWIN_NO_64_BIT_INODE thing for those who want to build a lisp kernel and interfaces using the 10.6 SDK.

[rme]

This should work now.

See r14675 and r14677.