[myanmar] Towards separating Myanmar from Indic table

src/hb-ot-shape-complex-myanmar.cc

@@ -185,7 +185,7 @@ initial_reordering_consonant_syllable (hb_buffer_t *buffer,
       info[i].myanmar_position() = POS_BASE_C;
       i++;
     }
-    indic_position_t pos = POS_AFTER_MAIN;
+    myanmar_position_t pos = POS_AFTER_MAIN;
     /* The following loop may be ugly, but it implements all of
      * Myanmar reordering! */
     for (; i < end; i++)

src/hb-ot-shape-complex-myanmar.hh

@@ -58,6 +58,7 @@ enum myanmar_category_t {
   OT_D    = 32, /* Digits except zero */
 };
 
+using myanmar_position_t = indic_position_t;
 
 static inline void
 set_myanmar_properties (hb_glyph_info_t &info)
@@ -65,7 +66,7 @@ set_myanmar_properties (hb_glyph_info_t &info)
   hb_codepoint_t u = info.codepoint;
   unsigned int type = hb_indic_get_categories (u);
   unsigned int cat = type & 0xFFu;
-  indic_position_t pos = (indic_position_t) (type >> 8);
+  myanmar_position_t pos = (myanmar_position_t) (type >> 8);
 
   /* Myanmar
    * https://docs.microsoft.com/en-us/typography/script-development/myanmar#analyze