Fix clean build on 64-bit platform by removing dependency on ../linear.o. By adding this,  ../linear.o is built without proper CFLAGS (say -fPIC) as it is built by current Makefile instead of ../Makefile. Without this dependency, the cost is everytime we type 'make', it relinks so again (should be fine though).
Fix clean build on 64-bit platform by removing dependency on ../linear.o. By adding
this,  ../linear.o is built without proper CFLAGS (say -fPIC) as it is built by
current Makefile instead of ../Makefile. Without this dependency, the cost is
everytime we type 'make', it relinks so again (should be fine though).


ShawnHuang/liblinear,cjlin1/liblinear,ShawnHuang/liblinear,angleto/liblinear,toothacher17/liblinear,robin-lai/liblinear,angleto/liblinear,ShawnHuang/liblinear,cjlin1/liblinear,rokm/liblinear,angleto/liblinear,cjlin1/liblinear,rokm/liblinear,cjlin1/liblinear,robin-lai/liblinear,rokm/liblinear,Maluuba/liblinear,robin-lai/liblinear,Maluuba/liblinear,toothacher17/liblinear,toothacher17/liblinear,rokm/liblinear,angleto/liblinear,Maluuba/liblinear,ShawnHuang/liblinear,Maluuba/liblinear,robin-lai/liblinear,toothacher17/liblinear