make the makefile compatible to MSVC nmake
make the makefile compatible to MSVC nmake

git-svn-id: f19c97e8f005192baec17bea89030dfe01a91913@1087 4e380d45-d1fd-0310-85a7-d18ec86df0ad

sriram-mahavadi/extlp,sriram-mahavadi/extlp,sriram-mahavadi/extlp,sriram-mahavadi/extlp