Add new unit test for the execution link.
Add new unit test for the execution link.

ceefour/opencog,AmeBel/atomspace,tim777z/opencog,yantrabuddhi/atomspace,tim777z/opencog,AmeBel/opencog,virneo/atomspace,williampma/opencog,ceefour/opencog,eddiemonroe/opencog,eddiemonroe/opencog,jlegendary/opencog,jswiergo/atomspace,Tiggels/opencog,sanuj/opencog,misgeatgit/atomspace,yantrabuddhi/atomspace,rTreutlein/atomspace,inflector/opencog,UIKit0/atomspace,ArvinPan/opencog,rodsol/opencog,jswiergo/atomspace,roselleebarle04/opencog,virneo/atomspace,rodsol/opencog,virneo/opencog,AmeBel/opencog,virneo/opencog,shujingke/opencog,sumitsourabh/opencog,ArvinPan/atomspace,cosmoharrigan/opencog,jlegendary/opencog,misgeatgit/opencog,tim777z/opencog,kim135797531/opencog,ceefour/atomspace,rTreutlein/atomspace,iAMr00t/opencog,tim777z/opencog,virneo/opencog,ArvinPan/opencog,gavrieltal/opencog,cosmoharrigan/atomspace,shujingke/opencog,anitzkin/opencog,rohit12/opencog,Selameab/atomspace,Allend575/opencog,Tiggels/opencog,misgeatgit/opencog,yantrabuddhi/opencog,ceefour/atomspace,TheNameIsNigel/opencog,ArvinPan/opencog,eddiemonroe/opencog,inflector/atomspace,kinoc/opencog,prateeksaxena2809/opencog,shujingke/opencog,sanuj/opencog,Selameab/opencog,prateeksaxena2809/opencog,virneo/opencog,virneo/opencog,gaapt/opencog,ruiting/opencog,shujingke/opencog,cosmoharrigan/opencog,gavrieltal/opencog,TheNameIsNigel/opencog,williampma/atomspace,AmeBel/opencog,virneo/atomspace,williampma/atomspace,ruiting/opencog,AmeBel/opencog,eddiemonroe/opencog,roselleebarle04/opencog,Allend575/opencog,williampma/opencog,prateeksaxena2809/opencog,virneo/atomspace,shujingke/opencog,sanuj/opencog,inflector/opencog,tim777z/opencog,yantrabuddhi/opencog,Allend575/opencog,eddiemonroe/atomspace,TheNameIsNigel/opencog,misgeatgit/opencog,jlegendary/opencog,kim135797531/opencog,sanuj/opencog,printedheart/atomspace,yantrabuddhi/opencog,inflector/opencog,andre-senna/opencog,Selameab/opencog,inflector/opencog,rodsol/atomspace,rTreutlein/atomspace,andre-senna/opencog,inflector/atomspace,yantrabuddhi/atomspace,rTreutlein/atomspace,sumitsourabh/opencog,cosmoharrigan/opencog,MarcosPividori/atomspace,Tiggels/opencog,tim777z/opencog,cosmoharrigan/atomspace,iAMr00t/opencog,UIKit0/atomspace,inflector/atomspace,kim135797531/opencog,andre-senna/opencog,rodsol/opencog,williampma/opencog,sumitsourabh/opencog,printedheart/opencog,printedheart/opencog,sanuj/opencog,williampma/opencog,printedheart/opencog,AmeBel/opencog,ceefour/atomspace,rohit12/atomspace,inflector/opencog,TheNameIsNigel/opencog,Selameab/opencog,roselleebarle04/opencog,AmeBel/atomspace,gaapt/opencog,UIKit0/atomspace,Tiggels/opencog,gavrieltal/opencog,rodsol/atomspace,williampma/atomspace,misgeatgit/atomspace,jlegendary/opencog,TheNameIsNigel/opencog,eddiemonroe/atomspace,misgeatgit/opencog,rohit12/opencog,sumitsourabh/opencog,gavrieltal/opencog,misgeatgit/opencog,kinoc/opencog,cosmoharrigan/opencog,eddiemonroe/opencog,iAMr00t/opencog,AmeBel/atomspace,ArvinPan/atomspace,TheNameIsNigel/opencog,UIKit0/atomspace,rodsol/opencog,Allend575/opencog,gaapt/opencog,inflector/atomspace,prateeksaxena2809/opencog,rohit12/atomspace,misgeatgit/opencog,rTreutlein/atomspace,Allend575/opencog,Selameab/atomspace,rohit12/atomspace,jlegendary/opencog,jswiergo/atomspace,cosmoharrigan/opencog,anitzkin/opencog,rohit12/opencog,ruiting/opencog,sanuj/opencog,gavrieltal/opencog,ceefour/opencog,ArvinPan/opencog,kinoc/opencog,eddiemonroe/atomspace,misgeatgit/opencog,kinoc/opencog,gavrieltal/opencog,gaapt/opencog,rodsol/opencog,misgeatgit/atomspace,ruiting/opencog,yantrabuddhi/opencog,andre-senna/opencog,eddiemonroe/atomspace,printedheart/opencog,printedheart/atomspace,iAMr00t/opencog,misgeatgit/opencog,kinoc/opencog,rodsol/atomspace,ruiting/opencog,MarcosPividori/atomspace,Allend575/opencog,Selameab/atomspace,jlegendary/opencog,roselleebarle04/opencog,shujingke/opencog,misgeatgit/atomspace,cosmoharrigan/atomspace,iAMr00t/opencog,ArvinPan/opencog,kinoc/opencog,gaapt/opencog,kim135797531/opencog,gaapt/opencog,Selameab/opencog,anitzkin/opencog,gavrieltal/opencog,AmeBel/opencog,ceefour/opencog,jlegendary/opencog,rohit12/opencog,sumitsourabh/opencog,anitzkin/opencog,Selameab/opencog,Allend575/opencog,gaapt/opencog,sumitsourabh/opencog,yantrabuddhi/opencog,prateeksaxena2809/opencog,roselleebarle04/opencog,williampma/opencog,AmeBel/atomspace,ArvinPan/atomspace,sumitsourabh/opencog,AmeBel/atomspace,ruiting/opencog,shujingke/opencog,yantrabuddhi/atomspace,inflector/opencog,AmeBel/opencog,virneo/opencog,kim135797531/opencog,eddiemonroe/opencog,williampma/opencog,ArvinPan/atomspace,ceefour/opencog,anitzkin/opencog,anitzkin/opencog,andre-senna/opencog,MarcosPividori/atomspace,cosmoharrigan/atomspace,ceefour/opencog,williampma/atomspace,Tiggels/opencog,rohit12/opencog,rodsol/opencog,kim135797531/opencog,printedheart/atomspace,Selameab/opencog,kinoc/opencog,ceefour/opencog,printedheart/opencog,rodsol/atomspace,jswiergo/atomspace,inflector/opencog,rohit12/opencog,virneo/opencog,eddiemonroe/atomspace,andre-senna/opencog,misgeatgit/opencog,roselleebarle04/opencog,Selameab/atomspace,eddiemonroe/opencog,misgeatgit/atomspace,inflector/opencog,roselleebarle04/opencog,prateeksaxena2809/opencog,iAMr00t/opencog,anitzkin/opencog,ceefour/atomspace,yantrabuddhi/opencog,yantrabuddhi/opencog,rohit12/atomspace,ruiting/opencog,Tiggels/opencog,yantrabuddhi/atomspace,printedheart/atomspace,inflector/atomspace,ArvinPan/opencog,kim135797531/opencog,andre-senna/opencog,cosmoharrigan/opencog,printedheart/opencog,MarcosPividori/atomspace,prateeksaxena2809/opencog