wlalink did not check file_id when searching for the bank numbers of
file-local labels and took the first one that came along, leading
to mixed-up bank numbers in references

Signed-off-by: ulrich.hecht <ulrich.hecht@gmail.com>

git-svn-id: http://snes-sdk.googlecode.com/svn/trunk@58 5e493d80-052e-11de-a3aa-254263d3d64b