reference srcdir for VPATH builds
reference srcdir for VPATH builds

jncornett/libdnet,kbandla/libdnet,jncornett/libdnet,jncornett/libdnet,wtfbbqhax/libdnet,wtfbbqhax/libdnet,kbandla/libdnet,kbandla/libdnet,wtfbbqhax/libdnet