[PATCH] proper check for sys/sysctl.h at build time

[Pino Toscano]

The "platform" part of "hugin_utils" has an hardcoded list of platforms where sys/sysctl.h is not present (basically Windows, and Solaris). This is because sys/sysctl.h is not a standard POSIX header.
OTOH, there are more platforms without that header, for example GNU/Hurd.

A better way is to check whether sys/sysctl.h exists, and include it only in that case. Attached there is a hg commit that does this.

[tmodes (tmodes)]

Thanks for the patch.
But the code in the mentioned file was not used anymore. So I removed the whole file without the need to change the build system.

[Pino Toscano (pinotree)]

Even better, thanks!