Added missing file from last commit

Author: odersky

src/library/scala/reflect/api/TreeBuildUtil.scala

@@ -0,0 +1,46 @@
+package scala.reflect.api
+
+trait TreeBuildUtil extends Universe {
+
+  /** The symbol corresponding to the globally accessible class with the
+   *  given fully qualified name `fullname`.
+   */
+  def staticClass(fullname: String): Symbol
+
+  /** The symbol corresponding to the globally accessible object with the
+   *  given fully qualified name `fullname`.
+   */
+  def staticModule(fullname: String): Symbol
+
+  /** The this-ptype of the globally accessible object with the
+   *  given fully qualified name `fullname`.
+   */
+  def thisModuleType(fullname: String): Type
+
+  /** Selects type symbol with given simple name `name` from the defined members of `owner`.
+   */
+  def selectType(owner: Symbol, name: String): Symbol
+
+  /** Selects term symbol with given name and type from the defined members of prefix type
+   *  @pre   The prefix type
+   *  @name  The name of the selected member
+   */
+  def selectTerm(owner: Symbol, name: String): Symbol
+
+  def selectOverloadedMethod(owner: Symbol, name: String, index: Int): Symbol
+
+  def selectParam(owner: Symbol, idx: Int): Symbol
+
+  def newScopeWith(decls: Symbol*): Scope
+
+  /** Create a fresh free variable symbol.
+   *  @param   name   the name of the free variable
+   *  @param   tsig   the type signature of the free variable
+   *  @param   value  the value of the free variable at runtime
+   */
+  def freeVar(name: String, tsig: Type, value: Any): Symbol
+
+  /** Create a Modiiers structure given internal flags, qualifier, annotations */
+  def modifiersFromInternalFlags(flags: Long, privateWithin: Name, annotations: List[Tree]): Modifiers
+
+}