KT-156 Fix the this<Super> syntax

In progress: super<List> must work, but currently it does not, only super<List<Foo>> works, where Foo is ignored.

grammar/src/class.grm

@@ -19,7 +19,7 @@ internal class Example<X, T : Comparable<X>>(protected val x : Foo<X, T>, y : So
 class
   : modifiers ("class" | "trait") SimpleName
       typeParameters?
-      modifiers ("(" primaryConstructorParameter{","} ")")?
+      modifiers ("(" functionParameter{","} ")")?
       (":" annotations delegationSpecifier{","})?
       typeConstraints
       (classBody? | enumClassBody)

grammar/src/expressions.grm

@@ -16,7 +16,7 @@ h3. Precedence
 | |Elvis|{{?:}} |
 | |Named checks|{{in}}, {{\!in}}, {{is}}, {{\!is}} |
 | |Comparison|{{<}}, {{>}}, {{<=}}, {{>=}} |
-| |Equality|{{==}}, {{\!==}}, {{===}}, {{\!===}} |
+| |Equality|{{==}}, {{\!==}}|
 | |Conjunction|{{&&}}|
 | |Disjunction|{{\|\|}}|
 | |Arrow|{{\->}}|
@@ -113,7 +113,8 @@ atomicExpression
   : literalConstant
   : functionLiteral
   : tupleLiteral
-  : "this" label? ("<" type ">")?
+  : "this" label?
+  : "super" ("<" type ">")? label?
   : if
   : when
   : try
@@ -184,7 +185,7 @@ comparisonOperation
   ;
 
 equalityOperation
-  : "!=" : "==" : "===" : "!=="
+  : "!=" : "=="
   ;
 
 assignmentOperator