Test suite - simpler simple_rm, simple_add, etc.

In a bid to continue simplifying how we write the repetetive bulky parts
of regression tests, I'm changing the sbox.simple_rm() etc. functions to
take path args that are relpaths relative to sbox.wc_dir, instead of
OS-style full paths relative to CWD.

The callers will change from

  mu_path = sbox.ospath('A/mu')
  sbox.simple_rm(mu_path)

to

  sbox.simple_rm('A/mu')

This is just a heads-up, and an opportunity for comments. (I'm not
expecting objections so I'll probably commit it before everyone has a
chance to read this.)

- Julian
Received on 2010-11-05 13:00:13 CET