Fix fpm on Python2.5
Fix fpm on Python2.5

- fix SyntaxError in get_metadata.py
- use simplejson if json module is not available

wyaeld/fpm,linearregression/fpm,tjyang/fpm,godp1301/fpm,paul-krohn/fpm,dischord01/fpm,sideci-sample/sideci-sample-fpm,tjyang/fpm,vi4m/fpm,snailwalker/fpm,schatt/fpm,virtkick/fpm,dischord01/fpm,wyaeld/fpm,dischord01/fpm,elvido/fpm,wyaeld/fpm,djhaskin987/merge-demo,josephfrazier/fpm,doghrim/fpm,josephfrazier/fpm,doghrim/fpm,pskrz/fpm,fetep/fpm,gearmover/fpm,jerizm/fpm,snailwalker/fpm,elvido/fpm,josephfrazier/fpm,snailwalker/fpm,pskrz/fpm,hlawrenz/fpm,johnbintz/fpm,cturra/fpm,rbramwell/fpm,dischord01/fpm,cturra/fpm,jerizm/fpm,joseph-onsip/fpm,joseph-onsip/fpm,godp1301/fpm,gearmover/fpm,paul-krohn/fpm,rbramwell/fpm,joseph-onsip/fpm,vi4m/fpm,mildred/fpm,mzaccari/fpm,jerizm/fpm,virtkick/fpm,gearmover/fpm,virtkick/fpm,linearregression/fpm,sideci-sample/sideci-sample-fpm,mildred/fpm,hlawrenz/fpm,mildred/fpm,cturra/fpm,sideci-sample/sideci-sample-fpm,godp1301/fpm,elvido/fpm,fetep/fpm,joseph-onsip/fpm,schatt/fpm,tjyang/fpm,godp1301/fpm,Tapjoy/fpm,doghrim/fpm,josephfrazier/fpm,doghrim/fpm,jerizm/fpm,rbramwell/fpm,hlawrenz/fpm,snailwalker/fpm,hlawrenz/fpm,vi4m/fpm,johnbintz/fpm,elvido/fpm,pskrz/fpm,djhaskin987/merge-demo,fetep/fpm,wyaeld/fpm,johnbintz/fpm,linearregression/fpm,tjyang/fpm,djhaskin987/merge-demo,Tapjoy/fpm,mildred/fpm,gearmover/fpm,mzaccari/fpm,cturra/fpm,paul-krohn/fpm,pskrz/fpm,mzaccari/fpm,paul-krohn/fpm,linearregression/fpm,schatt/fpm,virtkick/fpm,fetep/fpm,Tapjoy/fpm,rbramwell/fpm,vi4m/fpm,Tapjoy/fpm,mzaccari/fpm,schatt/fpm