Separate it from the ManuScript XML parser from the rest of the code

It needs some love to make it work again

tools/langs/manuscript.py

@@ -226,28 +226,6 @@
         }
     }
     return res;
-}"
-    getPositionInDocument "(obj) {
-    if (not Self.MEIFlattened) {
-        return false;
-    }
-    for i = 0 to Length(Self.MEIFlattened) {
-        if (Self.MEIFlattened[i] = obj) {
-            return i;
-        }
-    }
-    return false;
-}"
-    lookBack "(from, name) {
-    if (not Self.MEIFlattened) {
-        return false;
-    }
-    pos = getPositionInDocument(from);
-    for i = pos to 0 step -1 {
-        if (getName(Self.MEIFlattened[i]) = name) {
-            return Self.MEIFlattened[i];
-        }
-    }
 }"
     createXmlTag "(name, id, attributesList, isTerminal) {
     if (name = '<!--')
@@ -407,11 +385,6 @@
     meiDocumentToString "(meidoc) {
         return _exportMeiDocument(meidoc);
     }"
-    documentFromFile "(filename) {
-    res = _xmlImport(filename);
-
-    return res;
-}"
     popMode "(arr) {
     if (arr.Length > 0) {
         return arr.Pop();
@@ -447,6 +420,37 @@
 
         return string;
     }"
+
+generateRandomID "() {
+//$module(ExportGenerators.mss)
+    id = Self._property:MEIID + 1;
+    Self._property:MEIID = id;
+    id = 'm-' & id;
+    return id;
+}"
+}
+"""
+
+AUTHORS = "Andrew Hankinson, Alastair Porter, and Others"
+
+FILE_TEMPLATE = """
+{{
+    {license}
+    {classes}
+    {extras}
+}}
+"""
+
+# The XML parser code does not work at the moment because of how the code above 
+# has changed over time. It's kept anyway to facilitate future work on MEI 
+# import.
+XMLPARSER ="""
+    documentFromFile "(filename) {
+    res = _xmlImport(filename);
+
+    return res;
+}"
+
     _xmlImport "(filename) {
     /*
         Based on the Quick-n-Dirty XML parser at
@@ -831,25 +835,6 @@
     }
     return meidoc;
 }"
-
-generateRandomID "() {
-//$module(ExportGenerators.mss)
-    id = Self._property:MEIID + 1;
-    Self._property:MEIID = id;
-    id = 'm-' & id;
-    return id;
-}"
-}
-"""
-
-AUTHORS = "Andrew Hankinson, Alastair Porter, and Others"
-
-FILE_TEMPLATE = """
-{{
-    {license}
-    {classes}
-    {extras}
-}}
 """