ToolSelect isn't aware of namespaces

[tdealtry]

Say I have a tool inside namespaces HK::GHOST::WCSim_exe

After calling ToolSelect.sh and adding just that tool, Factory.cpp looks like this

#include "Factory.h"

Tool* Factory(std::string tool) {
Tool* ret=0;

// if (tool=="Type") tool=new Type;
if (tool=="WCSim_exe") ret=new WCSim_exe;
return ret;
}

and we get errors upon make like

UserTools/Factory/Factory.cpp:8:32: error: ‘WCSim_exe’ does not name a type; did you mean ‘WCSim_exe_H’?
 if (tool=="WCSim_exe") ret=new WCSim_exe;

There's a couple of possible workarounds

1. adding the line

using namespace HK::GHOST::G4;

2. modifying the line to add the namespaces explictly

if (tool=="WCSim_exe") ret=new HK::GHOST::WCSim_exe;

2. seems better to me, as it allows different namespaces to use the same tool name without clashing. The whole point of namespaces. Thoughts?

The other thing is that we need some clever & bulletproof way of extracting the Tool class namespace. I've not done much digging for such a tool, as someone may already have a solution 🤞