Updates ancient clefs (issue 7180043)

[PhilEHolmes]

Reviewers: ,

Message:
Minor change.  Please review.  Probably not worth a countdown - passes
make doc.

Description:
Updates ancient clefs

Adds c5 clef to mensural list, adds black mensural clefs
to list of clefs, replaces crochet with semi breve
(more common in ancient notation) and minor wording change.

Please review this at https://codereview.appspot.com/7180043/

Affected files:
  M Documentation/notation/ancient.itely


Index: Documentation/notation/ancient.itely
diff --git a/Documentation/notation/ancient.itely  
b/Documentation/notation/ancient.itely
index  
cc5a50d2dfba5b1c30bb1a7989a1880392a57221..170421af29e6c8654fc6ebc935472035ea92f7eb  
100644
--- a/Documentation/notation/ancient.itely
+++ b/Documentation/notation/ancient.itely
@@ -422,8 +422,8 @@ The following table shows all mensural clefs that are  
supported via
 the @code{\clef} command.  Some of the clefs use the same glyph,
 but differ only with respect to the line they are printed on.  In
 such cases, a trailing number in the name is used to enumerate
-these clefs, numbered from the lowest to the highest line.  Still,
-you can manually force a clef glyph to be typeset on an arbitrary
+these clefs, numbered from the lowest to the highest line.
+You can manually force a clef glyph to be typeset on an arbitrary
 line, as described in @ref{Clef}.  The note printed to the right
 side of each clef in the example column denotes the @code{c'} with
 respect to that clef.
@@ -443,12 +443,13 @@ beams, depending on which staff line it is printed.
 mensural C clef
 @tab
 @code{mensural-c1}, @code{mensural-c2},@*
address@hidden, @code{mensural-c4}
address@hidden, @code{mensural-c4},@*
address@hidden
 @tab
 @lilypond[relative=1,notime]
   \clef "mensural-c2"
   \override NoteHead.style = #'mensural
-  c
+  c1
 @end lilypond

 @item
@@ -459,7 +460,7 @@ mensural F clef
 @lilypond[relative=1,notime]
   \clef "mensural-f"
   \override NoteHead.style = #'mensural
-  c
+  c1
 @end lilypond

 @item
@@ -470,7 +471,20 @@ mensural G clef
 @lilypond[relative=1,notime]
   \clef "mensural-g"
   \override NoteHead.style = #'mensural
-  c
+  c1
address@hidden lilypond
+
address@hidden
+black mensural C clef
address@hidden
address@hidden, @code{blackmensural-c2},@*
address@hidden, @code{blackmensural-c4},@*
address@hidden
address@hidden
address@hidden,notime]
+  \clef "blackmensural-c2"
+  \override NoteHead.style = #'mensural
+  c1
 @end lilypond

 @item
@@ -480,7 +494,7 @@ neomensural C clef
 @code{neomensural-c3}, @code{neomensural-c4}
 @tab
 @lilypond[relative=1,notime]
-  \clef "neomensural-c2" c
+  \clef "neomensural-c2" c1
 @end lilypond

 @item
@@ -494,7 +508,7 @@ petrucci style C clefs, for use on different staff lines
 @lilypond[relative=1,notime]
   \clef "petrucci-c2"
   \override NoteHead.style = #'mensural
-  c
+  c1
 @end lilypond

 @item
@@ -507,7 +521,7 @@ petrucci style F clefs, for use on different staff lines
 @lilypond[relative=1,notime]
   \clef "petrucci-f3"
   \override NoteHead.style = #'mensural
-  c
+  c1
 @end lilypond

 @item
@@ -518,7 +532,7 @@ petrucci style G clef
 @lilypond[relative=1,notime]
   \clef "petrucci-g"
   \override NoteHead.style = #'mensural
-  c
+  c1
 @end lilypond
 @end multitable