install examples scripts and create "aliases" for commands

Geant4/G4examples/extended/electromagnetic/G4TestEm3/CMakeLists.txt

+gaudi_depends_on_subdirs(Geant4/G4config)
+
+gaudi_install_scripts()
+
+gaudi_alias(Calorimeter_test ExampleTestEm3run.sh)
+
+# CMT-compatibility alias
+gaudi_alias(testEm3.exe TestEm3)

Geant4/G4examples/extended/electromagnetic/G4TestEm5/CMakeLists.txt

+gaudi_depends_on_subdirs(Geant4/G4config)
+
+gaudi_install_scripts()
+
+gaudi_alias(MultipleScattering_test  Em5run.sh)
+
+# CMT-compatibility alias
+gaudi_alias(testEm5.exe TestEm5)

Geant4/G4examples/extended/electromagnetic/G4TestEm7/CMakeLists.txt

+gaudi_depends_on_subdirs(Geant4/G4config)
+
+# CMT-compatibility alias
+gaudi_alias(testEm7.exe TestEm7)

Geant4/G4examples/extended/electromagnetic/G4TestEm9/CMakeLists.txt

+gaudi_depends_on_subdirs(Geant4/G4config)
+
+# CMT-compatibility alias
+gaudi_alias(testEm9.exe TestEm9)

Geant4/G4examples/extended/hadronic/G4Hadr00/CMakeLists.txt

+gaudi_depends_on_subdirs(Geant4/G4config)
+
+gaudi_install_scripts()
+
+gaudi_alias(hadronic_tests run_hadronic_tests.py)
+
+# CMT-compatibility alias
+gaudi_alias(hard00.exe Hadr00)