[RFC] Adding libbacktrace

[Nick Clifton]

Hi Andrew,

> So, I can see two possible solutions here I think, one would be to
> remove the call to configure-target from src-release.sh - surely we
> don't expect to be building target libraries for binutils-gdb, right?

This script is so arcane that I would be hesitant to change anything...

> Or, I can try to figure out what causes the configure/build rules for
> zlib (as a target module) to be disabled, and do the same thing for
> libbacktrace.

My guess: zlib is in host_libs but not target_libraries, whereas libbacktrace
is in both.

Cheers
   Nick