[PATCH] add isDigit(lyx::char_type ch) function.

[Abdelrazak Younes]

This patch fixes the isDigit() MSVC warning in ControlSpellchecker.C.

Committing now...

Abdel.

Index: support/textutils.h
===================================================================
--- support/textutils.h (revision 14870)
+++ support/textutils.h (working copy)
@@ -15,6 +15,7 @@
 #ifndef TEXTUTILS_H
 #define TEXTUTILS_H
 
+#include "support/types.h"
 
 /// return true if the char is a line separator
 inline
@@ -58,4 +59,12 @@
 }
 
 
+/// completely pointless FIXME
+inline
+bool isDigit(lyx::char_type ch)
+{
+       return ch >= '0' && ch <= '9';
+}
+
+
 #endif // TEXTUTILS_H