doc: Use Octave preference for double quote in docstrings in scripts/ * interp1.m, interp2.m, interp3.m, interpn.m, profexplore.m, profile.m, profshow.m, quadgk.m, lookfor.m, imagesc.m, bzip2.m, gzip.m, parseparams.m, pkg.m, ancestor.m, caxis.m, ezmesh.m, ezmeshc.m, ezsurf.m, ezsurfc.m, hidden.m, hold.m, patch.m, pie.m, pie3.m, quiver.m, quiver3.m, scatter3.m, uicontextmenu.m, uicontrol.m, uipanel.m, uipushtool.m, uitoggletool.m, uitoolbar.m, xlim.m, ylim.m, zlim.m, ismember.m, setxor.m, filter2.m, bicg.m, demo.m, example.m, fail.m, test.m: Use Octave preference for double quote in docstrings in scripts/ directory.

--- a/scripts/image/imagesc.m	Sun Feb 12 16:02:26 2012 -0500
+++ b/scripts/image/imagesc.m	Mon Feb 13 07:38:23 2012 -0800
@@ -25,7 +25,7 @@
 ## Display a scaled version of the matrix @var{A} as a color image.  The
 ## colormap is scaled so that the entries of the matrix occupy the entire
 ## colormap.  If @var{limits} = [@var{lo}, @var{hi}] are given, then that
-## range is set to the 'clim' of the current axes.
+## range is set to the "clim" of the current axes.
 ##
 ## The axis values corresponding to the matrix elements are specified in
 ## @var{x} and @var{y}, either as pairs giving the minimum and maximum