Fix triangle symbol resolution error broke in 3.840, bug550.

This requires the parse symbol table persist across all parse runs. This is
probably more correct than before, but may result in some fallout if people
relied on data types not being persistant across separately parsed cells.

src/V3ParseImp.cpp

@@ -159,8 +159,8 @@ void V3ParseImp::lexFile(const string& modname) {
 //======================================================================
 // V3Parse functions
 
-V3Parse::V3Parse(AstNetlist* rootp, V3InFilter* filterp) {
-    m_impp = new V3ParseImp (rootp, filterp);
+V3Parse::V3Parse(AstNetlist* rootp, V3InFilter* filterp, V3ParseSym* symp) {
+    m_impp = new V3ParseImp (rootp, filterp, symp);
 }
 V3Parse::~V3Parse() {
     delete m_impp; m_impp = NULL;