bot and lib: fixed some bugs

PHP Notice:  Undefined index: ordertype in /home/acelan/litecoin/bot/cryptsy_bot/my_doge_bot.php on line 107
PHP Notice:  Undefined index: price in /home/acelan/litecoin/bot/cryptsy_bot/my_doge_bot.php on line 107
PHP Notice:  Undefined index: ordertype in /home/acelan/litecoin/bot/cryptsy_bot/my_doge_bot.php on line 109
PHP Notice:  Undefined index: ordertype in /home/acelan/litecoin/bot/cryptsy_bot/my_doge_bot.php on line 114
PHP Notice:  Undefined variable: label in /home/acelan/litecoin/bot/cryptsy_bot/cryptsy_bot.php on line 32
PHP Notice:  Undefined variable: buy_count in /home/acelan/litecoin/bot/cryptsy_bot/my_doge_bot.php on line 123

Signed-off-by: AceLan Kao <acelan@acelan.idv.tw>