Photospp-03-52-02 new external software infrastructure (Photospp-03-52-02)

        * new external software infrastructure
        * tag as Photospp-03-52-02

External/Photospp/cmt/requirements

@@ -6,7 +6,7 @@ use AtlasExternalArea     AtlasExternalArea-*     External
 use AtlasHepMC            AtlasHepMC-*            External
 use LCG_Configuration
 
-macro Photospp_home "$(LCG_ROOT)/external/MCGenerators_lcgcmt$(LCG_config_version)/photos++"
+macro Photospp_home "$(LCG_external)/MCGenerators/photos++"
 macro Photospp_version "3.52"
 macro Photospp_native_version "$(Photospp_version)_lcgcmt$(LCG_config_version)"
 macro Photospp_system "$(LCG_ext_system)"