approaching 4.5.21 release

[Roland McGrath]

> i can easily test alpha/arm/hppa/ia64/ppc/ppc64/s390/sh/sparc, but without any 
> sort of `make check`, my tests tend to consist of `strace ls` and `strace ps` 
> and be like "i guess that looks ok".

The other important thing to check is some -f cases.  Doubly so for this
release, where we have a major change in the methodlogy for -f support on
modern Linux kernels.  The trivial thing I always test is:
	strace -f /usr/bin/time /bin/true
which just makes sure that a basic fork+exec gets tracked.
It's important to test some multithreaded case too, but I don't
have a simple suggestion for that off hand.


Thanks,
Roland