check-code: prepend warning prefix for repeated warnings only once
When a warning occured several times in one file, "warning: " was prepended
several times:
examplefile.py:3:
> def a(object):
warning: this looks wrong
examplefile.py:27:
> def x(object):
warning: warning: this looks wrong
test: do not add .pyc and .orig in test-commit-amend.t (
issue4085)
This makes the test fails with disabled byte-compilation
(PYTHONDONTWRITEBYTECODE="1" environmental variable).
Added signature for changeset
d825e4025e39