Use better name for powerline variable in global scope
Use better name for powerline variable in global scope

It is completely possible that “pl” will be claimed by some other plugin
as well. There is no local scope for each .vim file in vim-python
interface.

blindFS/powerline,blindFS/powerline,magus424/powerline,cyrixhero/powerline,EricSB/powerline,magus424/powerline,kenrachynski/powerline,wfscheper/powerline,S0lll0s/powerline,junix/powerline,dragon788/powerline,bartvm/powerline,lukw00/powerline,Luffin/powerline,QuLogic/powerline,dragon788/powerline,DoctorJellyface/powerline,magus424/powerline,bezhermoso/powerline,junix/powerline,kenrachynski/powerline,xxxhycl2010/powerline,S0lll0s/powerline,bezhermoso/powerline,bartvm/powerline,wfscheper/powerline,Liangjianghao/powerline,kenrachynski/powerline,IvanAli/powerline,darac/powerline,QuLogic/powerline,S0lll0s/powerline,prvnkumar/powerline,s0undt3ch/powerline,firebitsbr/powerline,firebitsbr/powerline,cyrixhero/powerline,firebitsbr/powerline,xfumihiro/powerline,russellb/powerline,keelerm84/powerline,s0undt3ch/powerline,blindFS/powerline,areteix/powerline,prvnkumar/powerline,junix/powerline,dragon788/powerline,russellb/powerline,darac/powerline,EricSB/powerline,lukw00/powerline,Liangjianghao/powerline,keelerm84/powerline,bezhermoso/powerline,seanfisk/powerline,xxxhycl2010/powerline,xxxhycl2010/powerline,EricSB/powerline,prvnkumar/powerline,DoctorJellyface/powerline,seanfisk/powerline,xfumihiro/powerline,Luffin/powerline,darac/powerline,xfumihiro/powerline,Luffin/powerline,QuLogic/powerline,IvanAli/powerline,areteix/powerline,bartvm/powerline,DoctorJellyface/powerline,russellb/powerline,lukw00/powerline,wfscheper/powerline,cyrixhero/powerline,IvanAli/powerline,areteix/powerline,seanfisk/powerline,s0undt3ch/powerline,Liangjianghao/powerline