[mod_eggpoll] 7th 寫法加改良

5.1或以上使用PDO::SQLite3
Check Jquery on clientside, and will include jquery from google CDN
Fix
Merge pull request #25 from Kennyl/eggpoll

- CHG: [mod_eggpoll] 7th, 如果支援 PDO SQLite 3 便優先使用 (Thanks Kennyl)