Fill out QAST::Var and QAST::Block a little.

Author: jnthn

src/QAST/Block.nqp

@@ -1,5 +1,9 @@
 class QAST::Block is QAST::Node {
     has str $!blocktype;
+    has int $!lexical;
+    has str $!cuid;
 
     method blocktype(*@value) { $!blocktype := @value[0] if @value; $!blocktype }
+    method lexical(*@value)   { $!lexical := @value[0] if @value; $!lexical }
+    method cuid(*@value)      { $!cuid := @value[0] if @value; $!cuid }
 }

src/QAST/Var.nqp

@@ -1,3 +1,7 @@
 class QAST::Var is QAST::Node {
-    has $!scope;
+    has str $!scope;
+    has str $!decl;
+    
+    method scope(*@value) { $!scope := @value[0] if @value; $!scope }
+    method decl(*@value)  { $!decl := @value[0] if @value; $!decl }
 }