[Zlib-devel] fix no backtrace in match.s/inffast32.asm/match686.asm (patch)

[yoni londner]

Hi,

As you know, on 32bit systems, when using EBP for anything other than
holding the stack base, it is very difficult to get reasonable backtrace.
this can be fixed if directing the compiler to add a debug record which
tells (at runtime) where we keep EBP value.
So, I added this record (FPO in ml.exe and cfi in gcc), and now we can
debug/get backtrace at runtime.
Patch is attached, and I hope you will merge it to trunk.

Yoni Londner.
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