[MLton] bug: Posix.ProcEnv.setpgid

[Stephen Weeks]

> /tmp/filePNnqen.o(.text+0x1bcd): undefined reference to
> `Posix_ProcEnv_setpgid'
...
> I think there is supposed to be an implementation of this symbol in:
> mlton/runtime/Posix/ProcEnv/ProcEnv.c
> (maybe some other ones are missing too?)

How embarassing.  You are correct, Posix_ProcEnv_setpgid is missing
from ProcEnv.c.  I have checked in a fix.  I looked and don't see any
other ones missing.

> By the way, congratulations on the new version; it is very nice.

Thanks, and thanks for the bug report.