scylla-gdb.py: Fixes for GDB with python3
scylla-gdb.py: Fixes for GDB with python3

Fixes complaints about inability to convert gdb.Value to int.

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