Add <source> path and make class filenames relative to the source path
Add <source> path and make class filenames relative to the source path

This fixes gotwarlost/istanbul#50 by giving source paths where Jenkins
can find the source files in order to archive them and paint the source
with proper coverage styles.

technicallyfeasible/istanbul,sebmck/istanbul,jedmao/istanbul,rolka/istanbul,kriskowal/istanbul,trifacta/istanbul,GalenWarren/babel-istanbul,alonweiss-sl/sl-node-cover,simpletrain/istanbul,Eric013/istanbul,technicallyfeasible/istanbul,abstractj/istanbul,gtanner/istanbul,nagyistoce/istanbul,douglasduteil/istanbul,chrisj/istanbul,kitsonk/istanbul,abstractj/istanbul,fermads/istanbul,omsmith/istanbul,tamtakoe/istanbul,kpdecker/istanbul,GalenWarren/babel-istanbul,omsmith/istanbul,RubaXa/babel-istanbul,blakeembrey/istanbul,realtymaps/istanbul,joeegan/istanbul,camsong/istanbul-flow,simpletrain/istanbul,kitsonk/istanbul,blakeembrey/istanbul,gtanner/istanbul,kpdecker/istanbul,sebmck/istanbul,rtsao/babel-istanbul,kriskowal/istanbul,realtymaps/istanbul,tamtakoe/istanbul,kittens/istanbul,ambitioninc/babel-istanbul,slonoed/babel-istanbul,ezequiel/experimental-istanbul,kpdecker/istanbul,shaicantor/sl-node-cover,jedmao/istanbul,realtymaps/istanbul,gotwarlost/istanbul,blakeembrey/istanbul,dhoko/istanbul,joeegan/istanbul,omsmith/istanbul,mikeyoon/istanbul,alonweiss-sl/sl-node-cover,Eric013/istanbul,asa-git/istanbul,trifacta/istanbul,alonweiss-sl/sl-node-cover,joeegan/istanbul,douglasduteil/istanbul,jedmao/istanbul,ambitioninc/babel-istanbul,slonoed/babel-istanbul,rtsao/babel-istanbul,rolka/istanbul,slonoed/babel-istanbul,gotwarlost/istanbul,chrisj/istanbul,camsong/istanbul-flow,camsong/istanbul-flow,alihalabyah/istanbul,adamjmcgrath/istanbul,ezequiel/experimental-istanbul,chrisj/istanbul,adamjmcgrath/istanbul,douglasduteil/istanbul,Eric013/istanbul,simpletrain/istanbul,technicallyfeasible/istanbul,alihalabyah/istanbul,pegurnee/istanbul,tamtakoe/istanbul,sterling/istanbul,kyroskoh/istanbul,RubaXa/babel-istanbul,nagyistoce/istanbul,fermads/istanbul,asa-git/istanbul,ezequiel/experimental-istanbul,kitsonk/istanbul,mikeyoon/istanbul,gotwarlost/istanbul,shaicantor/sl-node-cover,ambitioninc/babel-istanbul,popomore/istanbul,0111001101111010/istanbul,sebmck/istanbul,popomore/istanbul,pegurnee/istanbul,RubaXa/babel-istanbul,gtanner/istanbul,alihalabyah/istanbul,bcoe/istanbul,mikeyoon/istanbul,dhoko/istanbul,nagyistoce/istanbul,sterling/istanbul,0111001101111010/istanbul,bcoe/istanbul,asa-git/istanbul,shaicantor/sl-node-cover,pegurnee/istanbul,rtsao/babel-istanbul,dhoko/istanbul,kittens/istanbul,kyroskoh/istanbul,trifacta/istanbul,bcoe/istanbul,adamjmcgrath/istanbul,sterling/istanbul,GalenWarren/babel-istanbul,fermads/istanbul,abstractj/istanbul,kyroskoh/istanbul,rolka/istanbul,kittens/istanbul