Make use of the axes "ticklabelinterpreter" property (bug #45438) * plot.txi: add an anchor pointing to usage of interpreter property * genpropdoc.m: document axes "ticklabelinterpreter" property and text "interpreter" property * gl-render.h: new private attribute "interpreter" that stores the interperter to be used in text_to_pixels * gl-render.h (set_interpreter): new protected virtual method to set "interpreter" * gl-render.cc (opengl_renderer::draw_axes): set interpreter before rendering tick labels * gl-render.cc (opengl_renderer::text_to_pixels): make use of interpreter attribute * graphics.cc (axes::properties::set_defaults): initialize "ticklabelinterpreter" instead of unused "interpreter" * graphics.in.h (axes::properties): fix doubly defined defaults for "ticklabelinterpreter" and "interpreter" properties

--- a/doc/interpreter/plot.txi	Thu Jun 25 08:32:21 2015 -0400
+++ b/doc/interpreter/plot.txi	Tue Jun 23 22:21:50 2015 +0200
@@ -616,6 +616,7 @@
 @DOCSTRING(closereq)
 
 @node Use of the @code{interpreter} Property
+@anchor{XREFinterpreterusage}
 @subsection Use of the @code{interpreter} Property
 
 All text objects---such as titles, labels, legends, and text---include