Fixes to handle MS project schema

xmlschema.ast

@@ -30,6 +30,7 @@ XmlHeader ::= Attribute*;
 abstract Element;
 abstract ComplexElement : Element ::= Attribute* Element*;
 
+XsAll            : ComplexElement;
 XsAnnotation     : ComplexElement;
 XsAny            : ComplexElement;
 XsAnyAttribute   : ComplexElement;

xmlschema.jjt

@@ -80,7 +80,8 @@ SPECIAL_TOKEN : /* COMMENTS */
 
 <DEFAULT, BOUNDS> TOKEN : /* RESERVED WORDS AND LITERALS */
 {
-    < XS_ANNOTATION            : "xs:annotation" >
+    < XS_ALL                   : "xs:all" >
+  | < XS_ANNOTATION            : "xs:annotation" >
   | < XS_ANY                   : "xs:any" >
   | < XS_ANYATTRIBUTE          : "xs:anyAttribute" >
   | < XS_APPINFO               : "xs:appinfo" >
@@ -267,6 +268,8 @@ SPECIAL_TOKEN : /* COMMENTS */
     | < DOT                  : "."    >
     | < SQUOTE               : "'"    >
     | < AT                   : "@"  >
+    | < PERCENT              : "%"  >
+    | < QUESTION             : "?"  >
 }// SEPARATORS
 
 
@@ -357,6 +360,7 @@ void ElementList() #List : {}
 void Element() : {}
 {
     ( "<" (XsAnnotation()
+	| XsAll()
 	| XsAny()
 	| XsAnyAttribute()
 	| XsAppinfo()
@@ -393,6 +397,12 @@ void XsAnnotation() #XsAnnotation : {}
 		 (">" ElementList() "</" <XS_ANNOTATION> ">" | ElementList() "/>")
 }
 
+void XsAll() #XsAll : {}
+{
+    <XS_ALL> AttributeList() 
+		 (">" ElementList() "</" <XS_ALL> ">" | ElementList() "/>")
+}
+
 void XsAny() #XsAny : {}
 {
     <XS_ANY> AttributeList()