Fix builtin_to_str in the case the builtin is not boolean
Fix builtin_to_str in the case the builtin is not boolean

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