Fix some issues with bypass_hotlink_blocking() running on a non-localhost server.  Found and fixed a bug in the strip_attributes() function (exclamation points weren't being handled properly).
Fix some issues with bypass_hotlink_blocking() running on a non-localhost server.  Found and fixed a bug in the strip_attributes() function (exclamation points weren't being handled properly).

barryvdh/simplepie,Alkarex/simplepie,skyzyx/simplepie,ropik/simplepie,mblaney/simplepie,barryvdh/simplepie,ropik/simplepie,songfj/simplepie,skyzyx/simplepie,gsnedders/complexpie,FreshRSS/simplepie,simplepie/simplepie,wikidi/simplepie,mblaney/simplepie,barryvdh/simplepie,FreshRSS/simplepie,Alexia/SimplePie,Alexia/SimplePie,Alkarex/simplepie,blat/simplepie,wikidi/simplepie,songfj/simplepie,blat/simplepie,blat/simplepie,simplepie/simplepie,songfj/simplepie,Alkarex/simplepie,wikidi/simplepie