make commit fail when committing unresolved files

Update win32mbcs extension * Code cleanup by Matt. * Fix the issue with case-insensitive fs support by wrapping also util.fspath() and util.checkcase() * Abort program when path conversion is failed.

Merge with stable

convert: implement startrev for hg source

merge with crew-stable

Added signature for changeset d2375bbee6d4

Added tag 1.0.2 for changeset d2375bbee6d4

Folding correction and missing import

util: disinfect lookup_reg strings (issue1126) lookup_reg could return Unicode strings, which would infect other strings and generate unexpected tracebacks. Spotted by Rémy Roy. Fold in silly nested function while we're at it.

test symlinks on symlink-capable os but non-capable filesystem (issue1149) The "real" way to test this is to mount a non-symlink-capable filesystem, and try working on it; however, I don't know how to mount filesystems as a non-priveleged user from within the testing framework. So instead, os.symlink is overridden to raise the exception that would be raised on such a filesystem.