[PATCH 2.5.30+] Second attempt at a shared credentials patch

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This patch allows tasks to share credentials via a flag to clone().

This version fixes the problem with exec() that Linus found. Tasks that
call exec() get their own copy of the credentials at that point.

The URL is here because it's too big to include in email:

http://www.ibm.com/linux/ltc/patches/misc/cred-2.5.30-3.diff.gz

The patch is against Linus' BK tree as of this morning.

Dave McCracken

======================================================================
Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059
dmccr@us.ibm.com T/L 678-3059

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