[nqp]: Bootstrap intermediate step

Because sub definitions change from package to lexical in the
new version of nqp, move the private subs to the top so they
work in both old and new versions of nqp.  nqp-self target
passes all nqp tests.

src/NQP/Actions.pm

@@ -21,6 +21,26 @@ sub INIT() {
     NQP::Grammar.O(':prec<f=>, :assoc<list>',  '%list_infix');
 }
 
+sub xblock_immediate($xblock) {
+    $xblock[1] := block_immediate($xblock[1]);
+    $xblock;
+}
+
+sub block_immediate($block) {
+    $block.blocktype('immediate');
+    unless $block.symtable() {
+        my $stmts := PAST::Stmts.new( :node($block) );
+        for $block.list { $stmts.push($_); }
+        $block := $stmts;
+    }
+    $block;
+}
+
+sub sigiltype($sigil) {
+    $sigil eq '%' 
+    ?? 'Hash' 
+    !! ($sigil eq '@' ?? 'ResizablePMCArray' !! 'Undef');
+}
 
 method TOP($/) { make $<comp_unit>.ast; }
 
@@ -516,23 +536,3 @@ method postfix:sym<-->($/) {
                        :pasttype('inline') );
 }
 
-sub xblock_immediate($xblock) {
-    $xblock[1] := block_immediate($xblock[1]);
-    $xblock;
-}
-
-sub block_immediate($block) {
-    $block.blocktype('immediate');
-    unless $block.symtable() {
-        my $stmts := PAST::Stmts.new( :node($block) );
-        for $block.list { $stmts.push($_); }
-        $block := $stmts;
-    }
-    $block;
-}
-
-sub sigiltype($sigil) {
-    $sigil eq '%' 
-    ?? 'Hash' 
-    !! ($sigil eq '@' ?? 'ResizablePMCArray' !! 'Undef');
-}