Added less memory hungry C++ version
Added less memory hungry C++ version

It has noe use description aka --help yet.
To compile:
cc -O3 -o convert convert.cpp
To run:
./convert germany_SSC_ch.bin germany_SSC_ch_ids > germany.txt

ToureNPlaner/tourenplaner-server,ToureNPlaner/tourenplaner-server,ToureNPlaner/tourenplaner-server,ToureNPlaner/tourenplaner-server