Merge branch 'fix-geant4-lib-dir-m' into 'master'

Fix Geant4 CMake build to install libraries in lib instead of lib64

See merge request !16

Geant4/G4config/CMakeLists.txt

@@ -60,6 +60,7 @@ ExternalProject_Add(Geant4
               -DGEANT4_USE_NETWORKDAWN=ON
               -DGEANT4_USE_INVENTOR=OFF
               -DCMAKE_INSTALL_PREFIX=${CMAKE_SOURCE_DIR}/InstallArea/$ENV{CMTCONFIG}
+              -DCMAKE_INSTALL_LIBDIR=lib
               -DGEANT4_INSTALL_DATADIR=${G4DATA}
               -DGEANT4_BUILD_VERBOSE_CODE=${G4VERBOSE}
               -DCMAKE_USE_CCACHE=${CMAKE_USE_CCACHE}