rpmresolve: improve debug output

rpmresolve: improve debug output

Rename rpmresolve's -d option to -t and make -d enable debug output;
add a -o option to specify the output file (so rpm debug output doesn't
go to the output file) and also add a little more detail to some of the
error messages.

(From OE-Core rev: 163dd734d79fd7040b48b10bca6fde28460ac20c)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>