Misc. typos

Found via codespell -q 3 -I ../cmake-whitelist.txt --skip="./Utilities" where whitelist consists of

aci
ans
behaviour
buil
convertor
dum
earch
ect
emmited
emmitted
helpfull
iff
isnt
ith
lowercased
mose
nd
nknown
nto
objext
ot
pathes
pevents
splitted
substract
superceded
supercedes
te
tim
todays
uint
upto
whitespaces