increase checkpoint span
increase checkpoint span

Conflicts:

	src/checkpoints.cpp

nochowderforyou/clams,Jheguy2/Mercury,Jheguy2/Mercury,Jheguy2/Mercury,nochowderforyou/clams,nochowderforyou/clams,robvanmieghem/clams,dooglus/clams,Kefkius/clams,thunderrabbit/clams,thunderrabbit/clams,robvanmieghem/clams,nochowderforyou/clams,dooglus/clams,Jheguy2/Mercury,robvanmieghem/clams,Kefkius/clams,nochowderforyou/clams,Jheguy2/Mercury,dooglus/clams,robvanmieghem/clams,robvanmieghem/clams,Kefkius/clams,thunderrabbit/clams,dooglus/clams,Kefkius/clams,thunderrabbit/clams,Kefkius/clams,dooglus/clams,thunderrabbit/clams