Issue title: using pathogen on Vim 7.0 hangs, export VIMBLACKLIST=Y is required
 Issue body: Using pathogen with Vim 7.0 hangs for me. The solution, as mentioned in a previous thread, was:

export VIMBLACKLIST=Y
vim

I'm on CentOS 5, so Vim 7.0 is the latest version of Vim natively available for now. We'll upgrade to CenOS 6 or 7 sometime during 2016.

Any chance we could get a patch for this in the meantime?

 Comments: 
 Comment 0: Dupe of #136
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