[Merge] ~liushuyu-011/ubuntu/+source/davmail:ubuntu/devel into ubuntu/+source/davmail:ubuntu/devel

[Vladimir Petko]

The bug is fixed in Debian and openjdk-* migrated =) 
Probably the MP can be closed.
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https://code.launchpad.net/~liushuyu-011/ubuntu/+source/davmail/+git/davmail/+merge/448108
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