cmn: search for dictionary matches instead of translating characters.

cmn (Mandarin chinese) has been broken since 4825905.

This fix makes mandarin behave more like Cantonese. Instead of
translating characters, we search for dictionary matches.

The functionality of normal vs Chao tones should be investigated more.
Looks like latin characters as pinyin still uses Chao tones whereas
the characters in cmn_list and cmn_listx do not.

See #1044 for discussion. See also #1028 and #1163.

phsource/ph_cmn

@@ -1,23 +1,39 @@
-
 //====================================================
 //  Tone Numbers
+//  Note: 
+//  For tones 1-5, both normal tones and Chao tones
+// are defined
 //====================================================
 
-phoneme 11   //  tone: low level
+//  tone: low level
+phoneme 11
   stress
   Tone(12, 9, envelope/i_risefall, NULL)
 endphoneme
 
+phoneme 5
+  stress
+  Tone(12, 9, envelope/i_risefall, NULL)
+endphoneme
+
+
 phoneme 21   //  tone: low fall
   stress
   Tone(20, 10, envelope/p_fall, NULL)
 endphoneme
 
-phoneme 214   //  tone: fall rise
+//  tone: fall rise
+phoneme 214
   stress
   Tone(18, 42, envelope/p_214, NULL)
 endphoneme
 
+phoneme 3
+  stress
+  Tone(18, 42, envelope/p_214, NULL)
+endphoneme
+
+
 phoneme 22   //  tone: mid-low level
   stress
   Tone(22, 20, envelope/p_fall, NULL)
@@ -28,7 +44,13 @@ phoneme 33   //  tone: mid level
   Tone(32, 30, envelope/p_fall, NULL)
 endphoneme
 
-phoneme 35   //  tone: mid rise
+//  tone: mid rise
+phoneme 35   
+  stress
+  Tone(30, 50, envelope/p_rise, NULL)
+endphoneme
+
+phoneme 2
   stress
   Tone(30, 50, envelope/p_rise, NULL)
 endphoneme
@@ -38,7 +60,13 @@ phoneme 44   //  tone: mid-high level
   Tone(38, 41, envelope/p_rise, NULL)
 endphoneme
 
-phoneme 51   //  tone: high fall
+//  tone: high fall
+phoneme 51
+  stress
+  Tone(50, 10, envelope/p_fall, NULL)
+endphoneme
+
+phoneme 4
   stress
   Tone(50, 10, envelope/p_fall, NULL)
 endphoneme
@@ -48,7 +76,13 @@ phoneme 53   //  tone: high fall
   Tone(50, 30, envelope/p_fall, NULL)
 endphoneme
 
-phoneme 55   //  tone: high level
+//  tone: high level
+phoneme 55   
+  stress
+  Tone(55, 50, envelope/p_level, NULL)
+endphoneme
+
+phoneme 1
   stress
   Tone(55, 50, envelope/p_level, NULL)
 endphoneme