staging: gracefully abort if two recipes conflict in the sysroot
When building the per-recipe sysroot keep track of what files we're installing
and where they came from, so we can detect when a file is installed by two
different recipes and tell the user what these recipes are (instead of just
showing a os.link() stack trace).
[ YOCTO #11631 ]
(From OE-Core rev:
606a8e0ca218f023e362c3678122d36d537f95de)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
