disk with serialize().

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control how it writes out end of lines.

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when used on statically sized matrices when they weren't square.

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Also made the spec more clear.

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- changed the member_function_pointer_kernel_1 slightly so that it
  compiles in visual studio.

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   - It never calls new or delete
   - It can point to const member functions
   - It has an operator bool and operator! so that it can now
     be used in an if statement like a normal pointer

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be closed before calling its member functions.  Now doing so is just a no op.

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--HG--
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a widget so that they still trigger even if the widget has been disabled
or hidden.

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--HG--
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--HG--
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--HG--
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--HG--
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--HG--
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--HG--
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--HG--
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--HG--
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button style.

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Also gave the list_box a user settable style.

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--HG--
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--HG--
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interface the ability to draw outside a button.

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draw the entire rectangle.

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drawing functions.

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--HG--
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--HG--
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--HG--
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--HG--
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- added the dragable::on_drag_stop() event
- added the dragable::is_being_dragged() function
- Made the scroll_bar have a user settable style and made a default
  style
- Added some missing mutex locks to the scroll_bar widget

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--HG--
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button widget.  I also added 4 new button styles that correspond to
the 4 types of arrow button.  Lastly, I had to move some things around
so that is why there seem to be a lot of code changes in this commit.

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--HG--
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--HG--
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