Make arguments like Context.GrobName accessible as symbol lists

Documentation/included/script-chart.ly

-\version "2.16.0"
+\version "2.17.6"
 
 \header {
   texidoc ="@cindex Feta scripts
 This chart shows all articulations, or scripts, that the feta font contains.
 "
 }
 
 #(begin
 
   (define script-list (map car default-script-alist))
@@ skipping 145 matching lines @@
 
 ) % end of (begin ...)
 
 \layout {
   line-width = 5.1\in
   indent = 0.0\mm
   \context {
     \Score
     timing = ##f
     barAlways = ##t
-    \override NonMusicalPaperColumn #'padding = #2.5
-    \override PaperColumn #'keep-inside-line = ##t
+    \override NonMusicalPaperColumn.padding = #2.5
+    \override PaperColumn.keep-inside-line = ##t
   }
   \context {
     \RhythmicStaff
     \remove "Time_signature_engraver"
-    \override BarLine #'transparent = ##t
-    \override Stem #'direction = #down
+    \override BarLine.transparent = ##t
+    \override Stem.direction = #down
   }
   \context {
     \Lyrics
-    \override LyricText #'font-family = #'typewriter
-    \override LyricText #'font-shape = #'upright
+    \override LyricText.font-family = #'typewriter
+    \override LyricText.font-shape = #'upright
   }
   \context {
     \VaticanaVoice
-    \override Script #'padding = #0
+    \override Script.padding = #0
   }
 }
 
 
 scriptStaff =
 #(define-music-function (parser location scripts) (list?)
    (make-scripts-staff scripts))
 
 scriptStaffAncient =
 #(define-music-function (parser location scripts) (list?)
    (make-scripts-staff-ancient scripts))