[m-dev.] fixes for two test cases

[Simon Taylor]

> tests/hard_coded/space.{m,out}:
> 	Use our own random number generator, since the output of random.m
> 	depends on the wordsize of the machine.
> 
> tests/hard_coded/no_inline.{m,out}:
> 	Use a more direct test of whether the C code is inlined or not.
> 

This looks fine.

Simon.