Fix multiple .v files being read in random order. [Stefan Thiede]

git-svn-id: file://localhost/svn/verilator/trunk/verilator@1026 77ca24e4-aefa-0310-84f0-b9a241c72d87

src/V3Options.cpp

@@ -101,9 +101,9 @@ void V3Options::addLibraryFile(const string& filename) {
     }
 }
 void V3Options::addVFile(const string& filename) {
-    if (m_vFiles.find(filename) == m_vFiles.end()) {
-	m_vFiles.insert(filename);
-    }
+    // We use a list for v files, because it's legal to have includes
+    // in a specific order and multiple of them.
+    m_vFiles.push_back(filename);
 }
 void V3Options::addArg(const string& arg) {
     m_impp->m_allArgs.push_back(arg);