for reading preferences on Windows, try HKCU first, then fall back to HKLM....

for reading preferences on Windows, try HKCU first, then fall back to HKLM. For writing, only write to HKCU

pd/src/s_file.c

@@ -189,11 +189,16 @@ static int sys_getpreference(const char *key, char *value, int size)
 {
     HKEY hkey;
     DWORD bigsize = size;
-    LONG err = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
+    LONG err = RegOpenKeyEx(HKEY_CURRENT_USER,
         "Software\\Purr-Data", 0,  KEY_QUERY_VALUE, &hkey);
     if (err != ERROR_SUCCESS)
     {
-        return (0);
+        err = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
+            "Software\\Purr-Data", 0,  KEY_QUERY_VALUE, &hkey);
+        if (err != ERROR_SUCCESS)
+        {
+            return (0);
+	}
     }
     err = RegQueryValueEx(hkey, key, 0, 0, value, &bigsize);
     if (err != ERROR_SUCCESS)
@@ -216,7 +221,7 @@ static void sys_initsavepreferences( void)
 static void sys_putpreference(const char *key, const char *value)
 {
     HKEY hkey;
-    LONG err = RegCreateKeyEx(HKEY_LOCAL_MACHINE,
+    LONG err = RegCreateKeyEx(HKEY_CURRENT_USER,
         "Software\\Purr-Data", 0, NULL, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE,
         NULL, &hkey, NULL);
     if (err != ERROR_SUCCESS)