[CVE-2011-3191] cifs: fix possible memory corruption in CIFSFindNext

[Andy Whitcroft]

CVE-2011-3191
	cifs: singedness issue in CIFSFindNext()

Following this email are three patches, one for hardy, one for
lucid and lucid/fsl-imx51, and one for maverick, maverick/ti-omap4,
natty, natty/ti-omap4, oneiric, and oneiric/ti-omap4.  The first
two are trivial backports for the patch, the last is a cherry-pick.

NOTE that these are cherry-picked from a commit in the cifs tree, but
are expected to merge as is.  With kernel.org being down merges are
somewhat delayed.  I have taken the liberty of keeping the sha1 to
simplify tracking.

Proposing for hardy, lucid, lucid/fsl-imx51, maverick, maverick/ti-omap4,
natty, natty/ti-omap4, oneiric, and oneiric/ti-omap4.

-apw