misc: Increase portability and initialize at most once

Use the custom "^self basicNew initialize" to create and
initialize the object.

core/MessageBuffer.st

@@ -24,9 +24,7 @@ Collection subclass: MessageBuffer [
 
     MessageBuffer class >> new [
         <category: 'creation'>
-        ^ (super new)
-            initialize;
-            yourself
+        ^self basicNew initialize
     ]
 
     initialize [

core/TLV.st

@@ -64,9 +64,7 @@ Object subclass: TLVDescription [
 
         new [
             <category: 'creation'>
-            ^ super basicNew
-                initialize;
-                yourself
+            ^self basicNew initialize
         ]
     ]
 

ipa/IPADispatcher.st

@@ -24,9 +24,7 @@ Object subclass: IPADispatcher [
 
     IPADispatcher class >> new [
         <category: 'creation'>
-        ^ super new
-            initialize;
-            yourself
+        ^self basicNew initialize
     ]
 
     initialize [

isup/generator/create_structs.st

@@ -107,8 +107,7 @@ Object subclass: StructCreator [
     ]
 
     StructCreator class >> new [
-        ^ super new
-            initialize
+        ^self basicNew initialize
     ]
 
     initialize [

m2ua/M2UAApplicationServerProcess.st

@@ -39,9 +39,7 @@ a single ASP to send one ASPActive for one interface at a time.'>
     ]
 
     M2UAApplicationServerProcess class >> new [
-	^super new
-	    initialize;
-	    yourself
+	^self basicNew initialize
     ]
 
     onError: aBlock [

m2ua/M2UAAspStateMachine.st

@@ -34,9 +34,7 @@ This class is currently not used!'>
     ]
 
     M2UAAspStateMachine class >> new [
-	^(self basicNew)
-	    initialize;
-	    yourself
+	^self basicNew initialize
     ]
 
     entered: aState [

osmo/OsmoUDPSocket.st

@@ -24,9 +24,7 @@ Object subclass: OsmoUDPSocket [
 
     OsmoUDPSocket class >> new [
         <category: 'creation'>
-        ^ super new
-            initialize;
-            yourself
+        ^self basicNew initialize
     ]
 
     initialize [