SI-4270 Rename implicits to avoid name clashes.

This will fail implicit search in the next commit.

Author: retronym

src/compiler/scala/tools/nsc/typechecker/ContextErrors.scala

@@ -90,7 +90,7 @@ trait ContextErrors {
     import infer.setError
 
     object TyperErrorGen {
-      implicit val context0: Context = infer.getContext
+      implicit val contextTyperErrorGen: Context = infer.getContext
 
       def UnstableTreeError(tree: Tree) = {
         def addendum = {
@@ -637,7 +637,7 @@ trait ContextErrors {
 
     object InferErrorGen {
 
-      implicit val context0 = getContext
+      implicit val contextInferErrorGen = getContext
 
       object PolyAlternativeErrorKind extends Enumeration {
         type ErrorType = Value
@@ -823,7 +823,7 @@ trait ContextErrors {
 
     object NamerErrorGen {
 
-      implicit val context0 = context
+      implicit val contextNamerErrorGen = context
 
       object SymValidateErrors extends Enumeration {
         val ImplicitConstr, ImplicitNotTermOrClass, ImplicitAtToplevel,
@@ -858,7 +858,7 @@ trait ContextErrors {
           case CyclicReference(sym, info: TypeCompleter) =>
             issueNormalTypeError(tree, typer.cyclicReferenceMessage(sym, info.tree) getOrElse ex.getMessage())
           case _ =>
-            context0.issue(TypeErrorWithUnderlyingTree(tree, ex))
+            contextNamerErrorGen.issue(TypeErrorWithUnderlyingTree(tree, ex))
         }
       }