py3: add os.getcwdb() to have bytes path Following the behaviour of Python 3, os.getcwd() return unicodes. We need bytes version as path variables are bytes in UNIX. Python 3 has os.getcwdb() which returns current working directory in bytes. Like rest of the things there in pycompat, like osname, ossep, we need to rewrite every instance of os.getcwd to pycompat.getcwd to make them work correctly on Python 3.

help: clarify contents of revlog index The previous wording indicated that field at index 3 was the size of the decompressed chunk, not the size of the full revision text.

zstd: fix compilation with Solaris Studio Without these changes, Solaris Studio (12.4) gives us "syntax error: empty declaration" on these two lines.