rework annexed object locking in direct mode & support Windows
Seems that locking of annexed objects when they're being dropped was broken in direct mode: * When taking the lock before dropping, it created the .git/annex/objects file, as an empty file. It seems that the dropping code deleted that, but that is not right, and for all I know could in some situation cause a corrupted object to leak out. * When the lock was checked, it actually tried to open each direct mode file, and checked if it was locked. Not the same lock used above, and could also fail if some consumer of the file locked it. Fixed this, and added windows support by switching direct mode to lock a .lck file.
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@ -7,8 +7,6 @@ now! --[[Joey]]
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support use of DOS style paths, which git-annex uses on Windows).
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Must use Msysgit.
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* rsync special remotes are known buggy.
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* Bad file locking, it's probably not safe to run more than one git-annex
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process at the same time on Windows.
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* Ssh connection caching does not work on Windows, so `git annex get`
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has to connect twice to the remote system over ssh per file, which
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is much slower than on systems supporting connection caching.
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