InDetDetDescr+InDetConditions: cmake cleanup

cmake cleanup of InnerDetector/InDetDetDescr and InnerDetector/InDetConditions packages:

• remove atlas_depends_on_subdirs
• update external and link dependencies
• do not install component headers
• enable flake8 where applicable

InnerDetector/InDetConditions/BeamSpotConditions/CMakeLists.txt

@@ -3,12 +3,15 @@
 # Declare the package name.
 atlas_subdir( BeamSpotConditions )
 
+# External dependencies:
+find_package( CORAL COMPONENTS CoralBase )
+
 # Component(s) in the package.
 atlas_add_component( BeamSpotConditions
    src/*.h src/*.cxx src/components/*.cxx
-   LINK_LIBRARIES GaudiKernel AthenaPoolUtilities AthenaBaseComps AthenaKernel
+   INCLUDE_DIRS ${CORAL_INCLUDE_DIRS}
+   LINK_LIBRARIES ${CORAL_LIBRARIES} GaudiKernel AthenaPoolUtilities AthenaBaseComps
    StoreGateLib BeamSpotConditionsData )
 
 # Install files from the package:
-atlas_install_python_modules( python/*.py
-                              POST_BUILD_CMD ${ATLAS_FLAKE8} )
+atlas_install_python_modules( python/*.py POST_BUILD_CMD ${ATLAS_FLAKE8} )