SQL: explicitly include source.sql#comments to make them work again.

* Reason: the comments context has been moved to the prototype context.
* Renamed comment to nested-comment.
* Fixed tests accordingly.

Author: azizk

syntaxes/SQL (Elixir).sublime-syntax

@@ -65,7 +65,8 @@ contexts:
         16: punctuation.comma.sql
         17: punctuation.terminator.sql
 
-    - include: comment
+    - include: nested-comment
+    - include: scope:source.sql#comments
     - include: scope:source.sql
 
     - match: |
@@ -80,12 +81,12 @@ contexts:
         4: punctuation.separator.decimal.sql
         5: punctuation.separator.decimal.sql
 
-  comment:
+  nested-comment:
     - match: /\*
       scope: punctuation.definition.comment.sql
       push:
         - meta_scope: comment.block.sql
         # Comments can be nested.
-        - include: comment
+        - include: nested-comment
         - match: \*/
           pop: 1

tests/syntax_test_sql_fragments.ex

@@ -262,7 +262,7 @@ fragment("t AT TIME ZONE")
 #                                                          ^^^^^^^ keyword.other.sql
 #                                                     ^^^ keyword.other.sql
 #                                              ^^^^^ keyword.other.sql
-#                                       ^^^^^ constant.boolean.sql
+#                                       ^^^^^ constant.language.boolean.sql
 #                               ^^^^^^ keyword.other.sql
 #                          ^^^ keyword.other.DML.sql
 #                    ^^^^ keyword.other.DML.sql
@@ -285,7 +285,7 @@ fragment("t AT TIME ZONE")
 #                                                                        ^^^^ keyword.other.sql
 #                                                                    ^^ keyword.other.sql
 #                                                            ^^^^^^ keyword.other.sql
-#                                                      ^^^^ constant.language.sql
+#                                                      ^^^^ constant.language.null.sql
 #                                                 ^^^ keyword.other.sql
 #                                        ^^^^^^^ keyword.other.sql
 #                        ^^^^^^^^^^^^^^ support.function.scalar.sql
@@ -305,7 +305,7 @@ fragment("t AT TIME ZONE")
   SOME; SYMMETRIC; TABLE; TABLESAMPLE; THEN; TO; TRAILING; TRUE; UNION; UNIQUE;
 #                                                                       ^^^^^^ keyword.other.sql
 #                                                                ^^^^^ keyword.other.DML.sql
-#                                                          ^^^^ constant.boolean.sql
+#                                                          ^^^^ constant.language.boolean.sql
 #                                                ^^^^^^^^ keyword.other.sql
 #                                            ^^ keyword.other.sql
 #                                      ^^^^ keyword.other.DML.sql