Flot 0.7 updated to support node-canvas

Flot_0_7.patch

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>                 width: null,
>                 height: null,
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<                 hooks: {}
---
>                 hooks: {},
>               width: null,
>               height: null
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<             var c = document.createElement('canvas');
---
>             var c;
>             if (window.Canvas){ // node-canvas is installed
>                 c = new Canvas(canvasWidth, canvasHeight);
>             } else {
>                 c = document.createElement('canvas');
>             }
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<             if (!c.getContext) // excanvas hack
---
>             if (window.G_vmlCanvasManager) // excanvas hack
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<             canvasWidth = placeholder.width();
<             canvasHeight = placeholder.height();
---
>             canvasWidth = placeholder.width() || options.width;
>             canvasHeight = placeholder.height() || options.height;
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<                 
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< 
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<                 if (w == null)
---
>                 if (!w)
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<                 if (h == null) {
---
>                 if (!h) {
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<             if (w == null)
---
>             if (!w)
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<             if (h == null)
---
>             if (!h)