recipetool: create: lower case name when determining from filename
As a matter of general convention we expect recipe names to be lower
case; in fact some of the packaging backends insist upon it. Since in
this part of the code we're auto-determining the name, we should convert
the name to lowercase if it's not already so that we're following
convention and avoiding any validation issues later on.
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
