made some itertools specializations static

Author: tomasstupka

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/itertools/AccumulateBuiltins.java

@@ -91,7 +91,7 @@ static Object iter(PAccumulate self) {
     @GenerateNodeFactory
     public abstract static class NextNode extends PythonUnaryBuiltinNode {
         @Specialization
-        Object next(VirtualFrame frame, PAccumulate self,
+        static Object next(VirtualFrame frame, PAccumulate self,
                         @Cached BuiltinFunctions.NextNode nextNode,
                         @Cached BinaryArithmetic.AddNode addNode,
                         @Cached CallNode callNode,

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/itertools/CompressBuiltins.java

@@ -85,7 +85,7 @@ static Object iter(PCompress self) {
     @GenerateNodeFactory
     public abstract static class NextNode extends PythonUnaryBuiltinNode {
         @Specialization
-        Object next(VirtualFrame frame, PCompress self,
+        static Object next(VirtualFrame frame, PCompress self,
                         @Cached BuiltinFunctions.NextNode nextNode,
                         @Cached PyObjectIsTrueNode isTrue,
                         @Cached LoopConditionProfile loopConditionProfile) {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/itertools/RepeatBuiltins.java

@@ -148,7 +148,7 @@ Object reduceNeg(PRepeat self,
     @GenerateNodeFactory
     public abstract static class ReprNode extends PythonUnaryBuiltinNode {
         @Specialization(guards = "self.getCnt() >= 0")
-        Object reprPos(VirtualFrame frame, PRepeat self,
+        static Object reprPos(VirtualFrame frame, PRepeat self,
                         @Cached GetClassNode getClass,
                         @Cached PyObjectGetAttr getAttrNode,
                         @Cached PyObjectReprAsObjectNode reprNode,
@@ -165,7 +165,7 @@ Object reprPos(VirtualFrame frame, PRepeat self,
         }
 
         @Specialization(guards = "self.getCnt() < 0")
-        Object reprNeg(VirtualFrame frame, PRepeat self,
+        static Object reprNeg(VirtualFrame frame, PRepeat self,
                         @Cached GetClassNode getClass,
                         @Cached PyObjectGetAttr getAttrNode,
                         @Cached PyObjectReprAsObjectNode reprNode,

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/itertools/ZipLongestBuiltins.java

@@ -200,7 +200,7 @@ protected boolean isNullFillValue(PZipLongest self) {
     @GenerateNodeFactory
     public abstract static class SetStateNode extends PythonBinaryBuiltinNode {
         @Specialization
-        Object setState(PZipLongest self, Object state) {
+        static Object setState(PZipLongest self, Object state) {
             self.setFillValue(state);
             return PNone.NONE;
         }