simplify custom isSymlink and isDirectory fns into S_ISLNK, S_ISDIR macros
simplify custom isSymlink and isDirectory fns into S_ISLNK, S_ISDIR macros

hkernbach/arangodb,baslr/ArangoDB,graetzer/arangodb,m0ppers/arangodb,fceller/arangodb,hkernbach/arangodb,baslr/ArangoDB,Simran-B/arangodb,hkernbach/arangodb,Simran-B/arangodb,hkernbach/arangodb,fceller/arangodb,fceller/arangodb,arangodb/arangodb,graetzer/arangodb,joerg84/arangodb,Simran-B/arangodb,graetzer/arangodb,baslr/ArangoDB,graetzer/arangodb,m0ppers/arangodb,Simran-B/arangodb,baslr/ArangoDB,joerg84/arangodb,baslr/ArangoDB,baslr/ArangoDB,baslr/ArangoDB,Simran-B/arangodb,m0ppers/arangodb,arangodb/arangodb,joerg84/arangodb,wiltonlazary/arangodb,fceller/arangodb,graetzer/arangodb,joerg84/arangodb,m0ppers/arangodb,graetzer/arangodb,m0ppers/arangodb,wiltonlazary/arangodb,joerg84/arangodb,baslr/ArangoDB,graetzer/arangodb,hkernbach/arangodb,joerg84/arangodb,joerg84/arangodb,graetzer/arangodb,Simran-B/arangodb,wiltonlazary/arangodb,graetzer/arangodb,baslr/ArangoDB,arangodb/arangodb,baslr/ArangoDB,arangodb/arangodb,Simran-B/arangodb,m0ppers/arangodb,baslr/ArangoDB,hkernbach/arangodb,hkernbach/arangodb,m0ppers/arangodb,graetzer/arangodb,joerg84/arangodb,arangodb/arangodb,joerg84/arangodb,m0ppers/arangodb,fceller/arangodb,hkernbach/arangodb,m0ppers/arangodb,joerg84/arangodb,wiltonlazary/arangodb,fceller/arangodb,wiltonlazary/arangodb,hkernbach/arangodb,hkernbach/arangodb,m0ppers/arangodb,fceller/arangodb,hkernbach/arangodb,Simran-B/arangodb,hkernbach/arangodb,wiltonlazary/arangodb,wiltonlazary/arangodb,joerg84/arangodb,joerg84/arangodb,fceller/arangodb,baslr/ArangoDB,m0ppers/arangodb,graetzer/arangodb,graetzer/arangodb,arangodb/arangodb,Simran-B/arangodb,joerg84/arangodb,Simran-B/arangodb,fceller/arangodb,hkernbach/arangodb,hkernbach/arangodb,arangodb/arangodb,fceller/arangodb,graetzer/arangodb,joerg84/arangodb,m0ppers/arangodb,arangodb/arangodb,baslr/ArangoDB,m0ppers/arangodb,baslr/ArangoDB,graetzer/arangodb,wiltonlazary/arangodb