Add cleaning instructions to Bootstrap.mak
Add cleaning instructions to Bootstrap.mak

noresources/premake-core,premake/premake-core,dcourtois/premake-core,noresources/premake-core,dcourtois/premake-core,dcourtois/premake-core,premake/premake-core,dcourtois/premake-core,starkos/premake-core,noresources/premake-core,starkos/premake-core,premake/premake-core,premake/premake-core,dcourtois/premake-core,noresources/premake-core,starkos/premake-core,noresources/premake-core,starkos/premake-core,premake/premake-core,starkos/premake-core,starkos/premake-core,noresources/premake-core,dcourtois/premake-core,premake/premake-core,dcourtois/premake-core,noresources/premake-core,premake/premake-core,starkos/premake-core