dxr-build.py: correctly skip directory path matches
dxr-build.py: correctly skip directory path matches

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