test-run-tests.t: test the --interactive option

run-tests: fixes the '--interactive' option error This patch fixes a regression recently introduced by a refactoring. Previously when failure occurs while testing with '--interactive' was enable, it didn't prompt user by asking whether he wants to accept this failure changes or not. This was happening beacuse of the 'if' condition if ret or not self._options.interactive or \ not os.path.exists(test.errpath): Everytime failure occurs, this condition gets true and returns back even when '--interactive' is enabled. This condition don't led the function to execute further, which consist the '--interactive' functionality. Now, on failure with '--interactive' enabled, it prompts user whether he wants to accepts failure changes or not. If yes then test gets passed and returns true, else test gets failed. On every failure, results gets stored in "self.failures.append((test, reason))" But if failure changes accepted by user then test must get "pop out" from failed test list.

run-tests: checks behaviour of test on failure while testing On failure while testing, if this function "result.addFailure(self, str(e))" returns true then test get 'passed' else count as 'failed'.

revlog: fix check-code error

merge with stable

revlog: hold a private reference to self._cache This keeps other threads from modifying self._cache out from under us. With this and the previous fix, 'hg serve' survives 100k hits with siege.

revlog: make _chunkcache access atomic With this and related fixes, 'hg serve' survived 100000 hits with siege.

tests: cat error messages are different on Solaris