[Gnuplot-bugs] Lots of bugs in the latex driver

Hello!

There are a few bugs in the latex terminal:

1) Sometimes the numbers at tics contain a ^ (eg. 10^2). In this case
the terminal must switch to math mode, otherwise latex wont compile due
to the missing $. The terminal should output $10^2$ and not just 10^2.

2) The epslatexstandalone referes to a eps file which is not generated.

Please not I'm using octave to plot.

Best regards,
Simon