[vala/staging] (25 commits) ...FIXME Fix build with valac < 0.23.1

[Rico Tzschichholz <ricotz src gnome org>]

Summary of changes:

  d7e6a10... vala: Make SemanticAnalyzer be stateless (*)
  252ea46... vala: Fix result var for pre/post conditions (*)
  721ddbd... parser: Allow to parse expressions/statements from string (*)
  c2791f8... Code builder (*)
  228bba5... Code transformer (*)
  923329f... Move MethodCall transformation into the code transformer (*)
  52643d6... Move WhileStatement transformation into the code transforme (*)
  5c0bb1a... Move DoStatement transformation into the code transformer (*)
  14b42ae... tests: Add test for do-while statement control-flow (*)
  78d896f... Move ForStatement transformation into the code transformer (*)
  d775dc3... Move ConditionalExpression transformation into the code tra (*)
  bb0e0c4... Move ForeachStatement transformation into the code transfor (*)
  ed23139... Move BinaryExpression transformation to the code transforme (*)
  90372ff... Move ObjectCreationExpression transformation to the code tr (*)
  4d10726... DOM-like linked list of statements (*)
  e41e467... Cleanup generated empty blocks (*)
  e6622c6... Move UnaryExpression tranformation into code transformer (*)
  a997a2e... Move Template transformation to the code transformer (*)
  16f415b... Move PostfixExpression transformation into the transformer (*)
  93e7cd0... Set the scope of the codebuilder block for symbol resolutio (*)
  966f5b8... Accept method call children (*)
  0d6d130... Use %? in the parser rather than stringifying expressions (*)
  7f1d186... Use more statements() (*)
  86bf90a... FIXME Implicit flatten array in foreach (*)
  b031306... FIXME Fix build with valac < 0.23.1

(*) This commit already existed in another branch; no separate mail sent