Support `/foo` and `-foo` on MSVC
Support `/foo` and `-foo` on MSVC

Just do a simple translation from `/foo` to `-foo`

mozilla/sccache,glandium/sccache,luser/sccache2,mozilla/sccache,glandium/sccache,glandium/sccache,mozilla/sccache,luser/sccache2,glandium/sccache,luser/sccache2,luser/sccache2