test-status-rev: add tests for plain dirstate and inter-revision status We have tests for the status across from '.^' to the working copy. It makes sense to have the similar tests for the inter-revision status between '.^' and '.' and for the dirstate status in the same place.

test-status-rev: remove unnecessary initial commit The initial commit was there when we had a group of tests that compared against an empty base, but since those tests no longer exist, we can drop the empty commit.

test-status-rev: use one glob for each expected status It's getting a little hard to read the ~30 calls to 'hg status' with one per file. Instead, let's use one glob for each expected status. For example, modified files can be listed with 'glob:content1_*_content[23]-tracked'. That also nicely becomes an explanation for why each status is expected.

test-status-rev: remove duplicate tests The second group of tests in test-status-rev compare to an empty revision. The first group of tests that compare to the first commit should be testing all the same states with the missing_* files, so drop the second group of tests.

changegroup: sparsely populate fnodes Previously, fnodes had a key and empty dict value for every element in changedfiles. This is somewhat wasteful. Empty dicts in CPython consume a lot more memory than you would expect - 280 bytes. On mozilla-central, which has ~190,000 files/fnodes keys, the previous loop populating fnodes allocated 91,924 KB of memory, most of that for the empty dicts. With this patch in place, our peak RSS during mozilla-central clone drops: before: 364,356 KB after: 326,008 KB delta: -38,348 KB When combined with the previous patch, total peak RSS decrease is now 190,116 KB.

changegroup: don't store unused value on fnodes (issue4443) The contents of fnodes are only accessed once per key. It is wasteful to cache the value since nobody will use it. Before this patch, the caching of unused data in fnodes was effectively causing a memory leak during the file streaming part of bundle creation. On mozilla-central (which has ~190,000 entries in fnodes), this patch has a significant impact on RSS at the end of generate(): before: 516,124 KB after: 364,356 KB delta: -151,768 KB The origin of this code can be traced back to 627cd7842e5d and has been with us since the 2.7 release.

changegroup: don't define lookupmf() until it is needed lookupmf() is currently defined earlier than when it is needed. Future patches further refactoring this code will be easier to read when lookupmf() is in its new home.

mail: actually use the verifycert config value The mail module only verifies the smtp ssl certificate if 'verifycert' is enabled (the default). The 'verifycert' can take three possible values: - 'strict' - 'loose' - any "False" value, eg: 'false' or '0' We tested the validity of the third value, but never converted it to actual falseness, making 'False' an equivalent for 'loose'. This changeset fixes it.

exchange: use the postclose API on transaction As with changegroup, we should wait for the transaction to be really closed before scheduling hook execution.

changegroup: use the 'postclose' API on transaction The post-transaction hooks run after the lock release (because hooks may want to touch the repository), but they must only run if the transaction is successfully closed. We use the new 'addpostclose' method on transaction to register a callback installing this post-lock-release call.