Made lexicon unpickling more robust; on error it regenerates it.
Made lexicon unpickling more robust; on error it regenerates it.

mcanthony/cython,da-woods/cython,roxyboy/cython,mrGeen/cython,andreasvc/cython,bzzzz/cython,da-woods/cython,ChristopherHogan/cython,rguillebert/CythonCTypesBackend,achernet/cython,acrispin/cython,cython/cython,c-blake/cython,hickford/cython,roxyboy/cython,hickford/cython,roxyboy/cython,ABcDexter/cython,scoder/cython,c-blake/cython,madjar/cython,fperez/cython,JelleZijlstra/cython,fperez/cython,scoder/cython,bzzzz/cython,c-blake/cython,scoder/cython,cython/cython,encukou/cython,acrispin/cython,fperez/cython,andreasvc/cython,larsmans/cython,slonik-az/cython,encukou/cython,ABcDexter/cython,fperez/cython,slonik-az/cython,JelleZijlstra/cython,acrispin/cython,achernet/cython,hickford/cython,fperez/cython,bzzzz/cython,dahebolangkuan/cython,madjar/cython,larsmans/cython,encukou/cython,andreasvc/cython,hpfem/cython,mcanthony/cython,mrGeen/cython,fabianrost84/cython,marscher/cython,larsmans/cython,encukou/cython,slonik-az/cython,mcanthony/cython,mrGeen/cython,encukou/cython,achernet/cython,cython/cython,marscher/cython,fabianrost84/cython,rguillebert/CythonCTypesBackend,ChristopherHogan/cython,rguillebert/CythonCTypesBackend,JelleZijlstra/cython,andreasvc/cython,scoder/cython,dahebolangkuan/cython,hpfem/cython,acrispin/cython,bzzzz/cython,larsmans/cython,hpfem/cython,hhsprings/cython,mrGeen/cython,marscher/cython,marscher/cython,ABcDexter/cython,hpfem/cython,da-woods/cython,andreasvc/cython,ABcDexter/cython,madjar/cython,roxyboy/cython,mcanthony/cython,madjar/cython,achernet/cython,larsmans/cython,hhsprings/cython,JelleZijlstra/cython,mcanthony/cython,madjar/cython,dahebolangkuan/cython,fabianrost84/cython,da-woods/cython,dahebolangkuan/cython,c-blake/cython,ChristopherHogan/cython,slonik-az/cython,c-blake/cython,hickford/cython,fabianrost84/cython,fabianrost84/cython,rguillebert/CythonCTypesBackend,JelleZijlstra/cython,hpfem/cython,slonik-az/cython,hhsprings/cython,acrispin/cython,cython/cython,hhsprings/cython,dahebolangkuan/cython,ABcDexter/cython,mrGeen/cython,roxyboy/cython,achernet/cython,hhsprings/cython,marscher/cython,hickford/cython