Report as many warning types as possible before exiting.

git-svn-id: file://localhost/svn/verilator/trunk/verilator@933 77ca24e4-aefa-0310-84f0-b9a241c72d87

src/Verilator.cpp

@@ -538,7 +538,7 @@ int main(int argc, char** argv, char** env) {
 
     // Final steps
     v3Global.rootp()->dumpTreeFile(v3Global.debugFilename("final.tree",99));
-    V3Error::abortIfErrors();
+    V3Error::abortIfWarnings();
 
     if (!v3Global.opt.lintOnly() && v3Global.opt.makeDepend()) {
 	V3File::writeDepend(v3Global.opt.makeDir()+"/"+v3Global.opt.prefix()+"__ver.d");