Added a fuction in moose.util to quickly plot a vector in terminal using
gnuplot.

git-svn-id: svn+ssh://svn.code.sf.net/p/moose/code/moose/branches/async13@5333 d1858a74-f715-0410-99c9-c66fe9cce3d6
Ascii plot using gnuplot also standalone gnuplot script is generated if file
argument is not None in function plotAscii.

Only works with two data-set which are list-like.

git-svn-id: svn+ssh://svn.code.sf.net/p/moose/code/moose/branches/async13@5334 d1858a74-f715-0410-99c9-c66fe9cce3d6
removed unneccessary eps plot files.

git-svn-id: svn+ssh://svn.code.sf.net/p/moose/code/moose/branches/async13@5335 d1858a74-f715-0410-99c9-c66fe9cce3d6