K 10
svn:author
V 6
jilles
K 8
svn:date
V 27
2015-06-24T20:51:48.357909Z
K 7
svn:log
V 201
sh: Fix some arithmetic undefined behaviour.

Fix shifts of possibly negative numbers found with ubsan and avoid signed
integer overflow when hashing an extremely long command name.

MFC after:	1 week

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