Revert change to use single value settings specific format for xcode
Revert change to use single value settings specific format for xcode

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