added a new include to support exit in environments where it isnt defined
added a new include to support exit in environments where it isnt defined

ufz/tclap,mjkoo/tclap,Qointum/tclap,xguerin/tclap,Qointum/tclap,eile/tclap,mirror/tclap,bb-generation/tclap,mc-server/TCLAP,mjkoo/tclap,xguerin/tclap,eile/tclap,ufz/tclap,mc-server/TCLAP,bb-generation/tclap,mc-server/TCLAP,xguerin/tclap,bb-generation/tclap,mirror/tclap,eile/tclap,mjkoo/tclap,ufz/tclap,mirror/tclap,Qointum/tclap,xguerin/tclap,mirror/tclap,bb-generation/tclap,eile/tclap