Improve and expand base58 comments
Improve and expand base58 comments

update comments so doxygen will pick them up

langerhans/dogecoin,jarymoth/dogecoin,haisee/dogecoin,Exceltior/dogecoin,koharjidan/dogecoin,haisee/dogecoin,Exceltior/dogecoin,marklai9999/Taiwancoin,jarymoth/dogecoin,brishtiteveja/sherlockcoin,brishtiteveja/sherlockcoin,koharjidan/dogecoin,jarymoth/dogecoin,langerhans/dogecoin,Domer85/dogecoin,langerhans/dogecoin,coinkeeper/2015-06-22_18-37_dogecoin,coinkeeper/2015-06-22_18-37_dogecoin,jarymoth/dogecoin,coinkeeper/2015-06-22_18-37_dogecoin,brishtiteveja/sherlockcoin,coinwarp/dogecoin,Exceltior/dogecoin,coinwarp/dogecoin,haisee/dogecoin,coinkeeper/2015-06-22_18-37_dogecoin,Domer85/dogecoin,koharjidan/dogecoin,langerhans/dogecoin,coinwarp/dogecoin,brishtiteveja/sherlockcoin,marklai9999/Taiwancoin,coinkeeper/2015-06-22_18-37_dogecoin,koharjidan/dogecoin,coinwarp/dogecoin,langerhans/dogecoin,coinwarp/dogecoin,Domer85/dogecoin,brishtiteveja/sherlockcoin,jarymoth/dogecoin,haisee/dogecoin,koharjidan/dogecoin,koharjidan/dogecoin,Exceltior/dogecoin,marklai9999/Taiwancoin,marklai9999/Taiwancoin,haisee/dogecoin,langerhans/dogecoin,Exceltior/dogecoin,Domer85/dogecoin