Switch to 8 hex digit keymapfile

as the value keyboardLayout is actually 32-bit unsigned integer.
See [MS-RDPBCGR] - v20160714 p.45.

instfiles/Makefile.am

@@ -9,23 +9,23 @@ EXTRA_DIST = \
 startscriptdir=$(sysconfdir)/xrdp
 
 dist_startscript_DATA = \
-  km-0407.ini \
-  km-0409.ini \
+  km-00000407.ini \
+  km-00000409.ini \
   km-040a.ini \
-  km-040c.ini \
-  km-0410.ini \
-  km-0411.ini \
-  km-0414.ini \
-  km-0415.ini \
-  km-0416.ini \
-  km-0419.ini \
-  km-041d.ini \
-  km-0807.ini \
-  km-0809.ini \
-  km-080c.ini \
-  km-0813.ini \
-  km-0816.ini \
-  km-100c.ini \
+  km-0000040c.ini \
+  km-00000410.ini \
+  km-00000411.ini \
+  km-00000414.ini \
+  km-00000415.ini \
+  km-00000416.ini \
+  km-00000419.ini \
+  km-0000041d.ini \
+  km-00000807.ini \
+  km-00000809.ini \
+  km-0000080c.ini \
+  km-00000813.ini \
+  km-00000816.ini \
+  km-0000100c.ini \
   km-e0010411.ini \
   km-e0200411.ini \
   km-e0210411.ini

xrdp/lang.c

@@ -231,12 +231,12 @@ get_keymaps(int keylayout, struct xrdp_keymap *keymap)
 
     filename = (char *)g_malloc(256, 0);
     /* check if there is a keymap file */
-    g_snprintf(filename, 255, "%s/km-%4.4x.ini", XRDP_CFG_PATH, keylayout);
+    g_snprintf(filename, 255, "%s/km-%08x.ini", XRDP_CFG_PATH, keylayout);
 
     /* if the file does not exist, try again with 'en-us' as fallback */
     if (!g_file_exist(filename))
     {
-        g_snprintf(filename, 255, "%s/km-0409.ini", XRDP_CFG_PATH);
+        g_snprintf(filename, 255, "%s/km-00000409.ini", XRDP_CFG_PATH);
     }
 
     if (g_file_exist(filename))
@@ -263,7 +263,7 @@ get_keymaps(int keylayout, struct xrdp_keymap *keymap)
             if (g_memcmp(lkeymap, keymap, sizeof(struct xrdp_keymap)) != 0)
             {
                 log_message(LOG_LEVEL_WARNING,
-                            "local keymap file for 0x%4.4x found and doesn't match "
+                            "local keymap file for 0x%08x found and doesn't match "
                             "built in keymap, using local keymap file", keylayout);
             }