parsers: fix memleak of revlog cache entries on strip Since 12a852c7c763, raw_length can be reduced on strip, but corresponding cache entries still have refcount. They are not dereferenced by _index_clearcache(), and never freed. To reproduce the problem, run "hg pull" and "hg strip null" several times in the same process.

hgweb: fix navigation label (issue3792) Latest refactoring (6da1e979340a) was buggy and used a variable from another loop. Tests are run on repo too small to cache that.

profiling: add documentation of lsprof 'sort' and 'nested'

OS X: try cheap ascii .lower() in normcase before making full unicode dance This is similar to what is done in encoding.lower, introduced in c481761033bd. This has been seen making 'hg up' and 'hg st' in a 50000+ files repo 13% faster. This might make Mercurial slightly slower for users who mainly use non-ASCII filenames. That is a reasonable trade-off.