This really needs to go in a branch. It needs heavy testing and can't coincide with the current shell32 due to PSDK interface changes

svn path=/branches/shell32_new-bringup/; revision=51893

lib/sdk/crt/mbstring/mbslwr.c

@@ -0,0 +1,55 @@
+/*
+ * COPYRIGHT:   See COPYING in the top level directory
+ * PROJECT:     ReactOS system libraries
+ * FILE:        lib/sdk/crt/mbstring/mbslwr.c
+ * PURPOSE:     Multibyte lowercase functions
+ * PROGRAMER:   Eric Kohl
+ *              Samuel Serapion, adapted from PROJECT C Library
+ */
+
+#include <precomp.h>
+#include <mbstring.h>
+#include <ctype.h>
+
+unsigned int _mbbtolower(unsigned int c)
+{
+	if (!_ismbblead(c) )
+		return tolower(c);
+	return c;
+}
+
+/*
+ * @implemented
+ */
+unsigned int _mbctolower(unsigned int c)
+{
+    return _ismbcupper (c) ? c + 0x21 : c;
+}
+
+/*
+ * @implemented
+ */
+unsigned char * _mbslwr(unsigned char *x)
+{
+    unsigned char *y=x;
+
+    if (x == NULL)
+    {
+        return NULL;
+    }
+
+    while (*y) 
+    {
+        if (!_ismbblead(*y)) 
+        {
+            *y = tolower(*y);
+            y++;
+        } 
+        else
+        {
+            *y = _mbctolower(*(unsigned short *)y);
+            y++;
+        }
+    }
+    return x;
+}