[cairo] Cairo and ISO C++

[Bill Spitzak]

Behdad Esfahbod wrote:

>> Currently the user has to draw an extremely
>> short stroke to get a dot which is not very intuitive,
> 
> False.  moveto followed by lineto to the same point produces a dot if rounded
> caps are in use.  We fixed that before cairo 1.4 in all backends.

That's good. I had not noticed it was fixed. I was under the impression 
that you purposely made zero-length lines invisible due to the some font 
problems. If this is fixed it  does make dots possible.