fix: gcd(bigint,bigint)
rewrite of crypto.lib: use bigint instead of number
change mod for numbers to mod for bigint, p2
doc: system("install"...) for CMD_M
change mod for numbers to mod for bigint, p3
change mod for numbers to mod for bigint, p4
change mod for numbers to mod for bigint, p5
Pfister: 3 fixes for genus/primdec
Doxygen / BS