tests/sitecustomize.py

annotate: build format string separately from annotation data

This prepares for porting to generic templater API.

Note that we cannot use '%*s' to pad white spaces because it doesn't take
into account character widths, as described in 4f5a6df2af92.

try:
    import coverage
    getattr(coverage, 'process_startup', lambda: None)()
except ImportError:
    pass