Use tinfoil to collect all variable names globally and in each recipe.
No longer show the count of variables if they are undocumented.
Fixes [YOCTO #2086]
(From OE-Core rev: b947de583964020b488cb1c382877624e96d4319)
Signed-off-by: Amanda Brindle <amanda.r.brindle@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>