Description of problem:
impossible to escape % sign in rpmspec file list.

Version-Release number of selected component (if applicable):


How reproducible:
very 

Steps to Reproduce:
1. try to build http://edgeapi.rubyonrails.org/classes/Rails/Railtie.html
which contains files with %name% string in it.
2. use gem2rpm to generate basic spec file.
3. try to rpmbuild it
  
Actual results:
fails

Expected results:
rpm

Additional info:
I tried %%name and even %%%%name
I tried setting variable 
%define nname name
and doing 
%%%{nname}

nothing works