replaced context-sensitive implementation of allowing digits at the beginning of names with a more general implementation (Fixes #1730)

(cherry picked from commit 4d94f38f4b)

components/compiler/fileparser.cpp

@@ -65,7 +65,6 @@ namespace Compiler
         if (mState==BeginState && keyword==Scanner::K_begin)
         {
             mState = NameState;
-            scanner.allowNameStartingwithDigit();
             return true;
         }
 
@@ -112,7 +111,6 @@ namespace Compiler
                 scanner.scan (mScriptParser);
 
                 mState = EndNameState;
-                scanner.allowNameStartingwithDigit();
                 return true;
             }