fixed bz2/gzip input for MmCorpus
fixed bz2/gzip input for MmCorpus

* was broken by adding IndexedCorpus

isohyt/gensim,olavurmortensen/gensim,quole/gensim,jaksmid/gensim,laic/gensim,robotcator/gensim,Kreiswolke/gensim,markroxor/gensim,markroxor/gensim,mattilyra/gensim,tzoiker/gensim,RaRe-Technologies/gensim,loisaidasam/gensim,macks22/gensim,summanlp/gensim,ziky90/gensim,bhargavvader/gensim,pombredanne/gensim,isohyt/gensim,quole/gensim,zachmayer/gensim,olavurmortensen/gensim,gojomo/gensim,dsquareindia/gensim,piskvorky/gensim,RaRe-Technologies/gensim,zachmayer/gensim,laic/gensim,olavurmortensen/gensim,tzoiker/gensim,robotcator/gensim,akutuzov/gensim,jaksmid/gensim,Kreiswolke/gensim,macks22/gensim,davechallis/gensim,markroxor/gensim,davechallis/gensim,summanlp/gensim,isohyt/gensim,ELind77/gensim,ziky90/gensim,laic/gensim,mattilyra/gensim,akutuzov/gensim,tzoiker/gensim,RaRe-Technologies/gensim,manasRK/gensim,loisaidasam/gensim,gojomo/gensim,jaksmid/gensim,loisaidasam/gensim,manasRK/gensim,gojomo/gensim,dsquareindia/gensim,ELind77/gensim,ziky90/gensim,macks22/gensim,robotcator/gensim,quole/gensim,ELind77/gensim,zachmayer/gensim,summanlp/gensim,manasRK/gensim,bhargavvader/gensim,akutuzov/gensim,pombredanne/gensim,piskvorky/gensim,mattilyra/gensim,piskvorky/gensim,dsquareindia/gensim,RaRe-Technologies/gensim,davechallis/gensim,pombredanne/gensim,bhargavvader/gensim,gojomo/gensim,Kreiswolke/gensim