yPlot Code

Re-indent following emacs cmake mode rules.
Install static documentation files.

Cleanups to get rid of all warnings other than "may be uninitialized"

Remove .cvsignore files which are not needed by svn.

Generate documentation using yorick rather than yplot. No plotting
facilities are needed for this task so we should have made this change long
since, but the change is now mandatory since yplot no longer exists as a
separate executable.

Better instructions about how to enable the yorick extension that gets built
by "make" and installed by "make install".

Implement USE_Y_SITE option. If that option is turned ON, then the Yorick
Y_SITE prefix is used to install the three key files (yplot.so, yplot.i, and
70yplot.i) that implement the yplot extension of yorick. If that option is
turned OFF (the default) those three key files are installed using the
${CMAKE_INSTALL_PREFIX}/lib/yorick prefix instead. The advantage of the
latter course is you don't have to have access to the root account to
install the yplot extension to Yorick (depending on how you have set
CMAKE_INSTALL_PREFIX). The disadvantage is you must use Yorick's add_y_home
function to add ${CMAKE_INSTALL_PREFIX}/lib/yorick to Yorick's normal Y_SITE
to enable the yplot extension of Yorick.

Drop all -i options from the command line so they don't mess up the PLplot
version of plparseopts.

New instructions and comments about the dynamical plug-in mechanism that
is now being used to extend yorick with yplot commands.

Get rid of debug output of YPLOT_EXTENSION_FILES_DEPENDS.

Move from standalone executable to dynamically loaded plug-in.

Debian bug workaround not needed for this method so get rid of it as well as
main.c (which was required only for the workaround).

Implement autoloading (which is needed if you don't want the dynamically
loaded plug-in method to be a pain).