Fix debian architecture parsing

debian/autobake-deb.sh

@@ -77,7 +77,7 @@ fi
 GCCVERSION=$(gcc -dumpversion | sed -e 's/\.\([0-9][0-9]\)/\1/g' -e 's/\.\([0-9]\)/0\1/g' -e 's/^[0-9]\{3,4\}$/&00/')
 # Don't build rocksdb package if gcc version is less than 4.8 or we are running on
 # x86 32 bit.
-if [ $GCCVERSION -lt 40800 ] || [ $(uname -i) -eq "i386" ] || [$(uname -i) -eq "i486"]
+if [[ $GCCVERSION -lt 40800 ]] || [[ $(arch) =~ i[346]86 ]]
 then
   sed '/Package: mariadb-plugin-rocksdb/,+7d' -i debian/control
 fi