single slash behaviour with cmsd redirector

Slash behaviour under standard authdb and xrootd exports:

all.export *?
all.export /

same behaviour if all.export * is used

	root	davs

	root	davs
/	fails (permission denied)	ok
//	ok	ok
cms_select called	yes, path removes leading slash for single slash	no

behaviour: cmsd removes the leading slash if a single slash is given for the path for reads, writes, tpc and stat. 2 or more slashes result in a path starting with a single leading slash.
root protocol triggers the XrdCmsCluster::Select(XrdCmsSelect &Sel) function in /src/XrdCms/XrdCmsCluster.cc, while davs does not

	/store	//store	/lhcb:user (or other)	//lchb:user (or other)

	/store	//store	/lhcb:user (or other)	//lchb:user (or other)
xrootd.echo.stfc.ac.uk	ok	ok	ok	ok
cmsd	fail	ok	fail	ok
cmsd with / injection	fail	ok	ok	ok

/store seems to be rejected with permission denied before it gets to anywhere that’s logged in the cmsd logs.