tests/test-commit-copy.out

config: raise ConfigError on non-existing include files

Before, an %include directive for a non-existing file resulted in an
IOError and a traceback.

foo renamed from bar:26d3ca0dfd18e44d796b564e38dd173c9668d3a9
   rev    offset  length   base linkrev nodeid       p1           p2
     0         0       6      0       0 26d3ca0dfd18 000000000000 000000000000
     1         6       7      1       1 d267bddd54f7 26d3ca0dfd18 000000000000