cql3: unprotect some 'class function' methods
cql3: unprotect some 'class function' methods

'protected' is more strict in C++ than in Java, and these functions need
to be accessed from elsewhere.

rentongzhang/scylla,asias/scylla,guiquanz/scylla,tempbottle/scylla,asias/scylla,rluta/scylla,victorbriz/scylla,acbellini/scylla,justintung/scylla,duarten/scylla,bowlofstew/scylla,linearregression/scylla,rentongzhang/scylla,kangkot/scylla,avikivity/scylla,kangkot/scylla,aruanruan/scylla,linearregression/scylla,gwicke/scylla,stamhe/scylla,scylladb/scylla,wildinto/scylla,wildinto/scylla,glommer/scylla,senseb/scylla,guiquanz/scylla,scylladb/scylla,justintung/scylla,kjniemi/scylla,avikivity/scylla,avikivity/scylla,shaunstanislaus/scylla,glommer/scylla,dwdm/scylla,eklitzke/scylla,glommer/scylla,duarten/scylla,kangkot/scylla,rentongzhang/scylla,kjniemi/scylla,capturePointer/scylla,respu/scylla,raphaelsc/scylla,capturePointer/scylla,eklitzke/scylla,victorbriz/scylla,shaunstanislaus/scylla,eklitzke/scylla,bowlofstew/scylla,shaunstanislaus/scylla,gwicke/scylla,kjniemi/scylla,raphaelsc/scylla,dwdm/scylla,bowlofstew/scylla,raphaelsc/scylla,duarten/scylla,capturePointer/scylla,aruanruan/scylla,linearregression/scylla,rluta/scylla,stamhe/scylla,stamhe/scylla,acbellini/scylla,respu/scylla,phonkee/scylla,asias/scylla,respu/scylla,victorbriz/scylla,acbellini/scylla,rluta/scylla,senseb/scylla,dwdm/scylla,wildinto/scylla,phonkee/scylla,scylladb/scylla,gwicke/scylla,justintung/scylla,aruanruan/scylla,tempbottle/scylla,tempbottle/scylla,phonkee/scylla,senseb/scylla,scylladb/scylla,guiquanz/scylla