make is not necessarily GNU make: allow setting name of GNU make in environment
make is not necessarily GNU make: allow setting name of GNU make in environment

jbradberry/dxr,KiemVM/Mozilla--dxr,jbradberry/dxr,nrc/dxr,erikrose/dxr,KiemVM/Mozilla--dxr,jonasfj/dxr,gartung/dxr,kleintom/dxr,jonasfj/dxr,pelmers/dxr,pelmers/dxr,KiemVM/Mozilla--dxr,KiemVM/Mozilla--dxr,nrc/dxr,bozzmob/dxr,srenatus/dxr,pombredanne/dxr,pombredanne/dxr,jay-z007/dxr,gartung/dxr,erikrose/dxr,jay-z007/dxr,bozzmob/dxr,srenatus/dxr,bozzmob/dxr,pelmers/dxr,pelmers/dxr,kleintom/dxr,jay-z007/dxr,jonasfj/dxr,pelmers/dxr,jbradberry/dxr,jonasfj/dxr,srenatus/dxr,nrc/dxr,pelmers/dxr,jay-z007/dxr,jonasfj/dxr,bozzmob/dxr,pombredanne/dxr,jbradberry/dxr,kleintom/dxr,nrc/dxr,pombredanne/dxr,pombredanne/dxr,erikrose/dxr,nrc/dxr,KiemVM/Mozilla--dxr,erikrose/dxr,jay-z007/dxr,nrc/dxr,bozzmob/dxr,erikrose/dxr,srenatus/dxr,jonasfj/dxr,gartung/dxr,jay-z007/dxr,srenatus/dxr,pombredanne/dxr,jay-z007/dxr,KiemVM/Mozilla--dxr,bozzmob/dxr,kleintom/dxr,jbradberry/dxr,bozzmob/dxr,kleintom/dxr,pombredanne/dxr,kleintom/dxr,kleintom/dxr,gartung/dxr,jbradberry/dxr,srenatus/dxr,jbradberry/dxr,pelmers/dxr,gartung/dxr,gartung/dxr,gartung/dxr