RFR: Remove execinfo debug code from XToolkit.c

[Magnus Ihse Bursie]

On 2017-04-12 01:23, Mikael Vidstedt wrote:
> XToolkit.c has some linux specific debug code in it which is effectively dead. The debug code depends on backtracing functionality from execinfo.h, but musl does not implement/support execinfo.h.
>
> Since the code is dead, I chose to remove it. In case it turns out that this debugging code gets used a lot when chasing down bugs etc. we’ll have to look at how to support it on musl, or perhaps only enable it if execinfo.h is available.
>
> http://cr.openjdk.java.net/~mikael/webrevs/portola/execinfo/webrev.00/jdk/webrev/
>
> Cheers,
> Mikael
>
LGTM.

/Magnus