mpatch: use int rather than ssize_t We might need to be more clever than this to make Py2.5 happy.

osutil: improve portability - manually inline mode_to_kind - remove unused alloca include - remove fstatat and associated bits It's not obvious that there's an advantage to using fstatat in terms of performance. The race-avoidance properties of fstatat aren't terribly useful to us either. So best to avoid it until we figure out how to use it portably.

fix typo

import gettext since '_' is used

explicitely use integer division

fix UnboundLocalError, refactor a bit bin wasn't defined in all branches (bug introduced in 82b4ff3abbcd

bdiff: tweaks for large files - adjust the common line threshold to .1% this speeds up a delta of 7M lines of source from 10m to 40s - adjust the scaling of the hash array down a bit as it was raising the peak memory usage significantly

revlog: break up compression of large deltas Python's zlib apparently makes an internal copy of strings passed to compress(). To avoid this, compress strings 1M at a time, then join them at the end if the result would be smaller than the original. For initial commits of large but compressible files, this cuts peak memory usage nearly in half.

revlog: fix caching of buffer objects

chunkiter: handle large reads more efficiently - for large reads, don't attempt to read more than necessary - if we've gathered the exact number of bytes needed, avoid a string copy