Fix issues when not using a US-ASCII superset with SimplePie::subscribe_outlook().
Fix issues when not using a US-ASCII superset with SimplePie::subscribe_outlook().


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