HPCC-12288 agentexec.cpp contains code to look for agentexec.xml in the ...

...code directory

Look for agentexec,xml configuration file in the current directory, not
the directory where the executable is located

Signed-off-by: William Whitehead <william.whitehead@lexisnexis.com>
What is this - a member variable? Is it now unset? Is it ever referenced? Should it be deleted?