Fix for labeling bar graphs

[vezult]

This branch contains a fix for #11.

The bug is that we get a crash when attempting to label bar graphs:

Uncaught exception: TypeError: Cannot convert 'v[x*(B||1)+s]' to object

Error thrown at line 7, column 3997 in (y, S) in http://localhost:8000/media/js/g.bar-min.js:
    T=c.g.text(v[x*(B||1)+s].x,S?A+d-g/2:v[x*(B||1)+s].y-10,U).insertBefore(e[x*(B||1)+s]);
called from line 19, column 6 in () in http://localhost:8000/blog/:
    chart.label(labels);
called from line 26, column 212 in () in http://localhost:8000/media/js/jquery-1.4.1.min.js:
    a.call(r,c);
called via Function.prototype.call() from line 33, column 9 in () in http://localhost:8000/media/js/jquery-1.4.1.min.js:
    c.ready()

The problem was simply that a set of variable assignments were misordered:
multi = len;
len = 0;

I've fixed both g.bar.js and g.bar-min.js

[glittle]

These suggested fixes did not work correctly for me. I've just committed some fixes that improve the label for both vertical and horizontal bars, with stacked and non-stacked options.

See: http://github.com/glittle/g.raphael/commit/b7054272e5165dfc19cb44c395dec4740cb80f34

[karolk]

Not compatible with new g.raphael.

[boddhisattva]

@karolk Is there a fix for labeling available with the new g.raphael for bar graphs ? There's a similar issue that is opened here but it doesn't look like we have a work around for it yet.