Bug#814753: scummvm-tools: FTBFS on non-Linux: #error No system type defined

[Aaron M. Ucko]

Source: scummvm-tools
Version: 1.7.0-1
Severity: important
Justification: fails to build from source

Builds of scummvm-tools on non-Linux architectures (kFreeBSD so far)
have been failing:

  ./common/scummsys.h:370:3: error: #error No system type defined
    #error No system type defined

The problem appears to be that kfreebsd* isn't in the configure
script's POSIX whitelist (line 1194); the Hurd (gnu*) is missing too.

Could you please take a look?

Thanks!