Put core libraries in lib directory instead of bin. Re #2753.

Code/Mantid/Build/CMake/LinuxSetup.cmake

@@ -18,7 +18,7 @@ endif ()
 ###########################################################################
 
 set ( BIN_DIR bin )
-set ( LIB_DIR ${BIN_DIR} )
+set ( LIB_DIR lib )
 set ( PLUGINS_DIR plugins )
 
 set ( CMAKE_INSTALL_PREFIX /opt/${CMAKE_PROJECT_NAME} )

Code/Mantid/Framework/PythonAPI/CMakeLists.txt

@@ -171,7 +171,7 @@ endif ()
 # Installation settings
 ###########################################################################
 
-install ( TARGETS PythonAPI DESTINATION ${LIB_DIR} )
+install ( TARGETS PythonAPI DESTINATION ${BIN_DIR} )
 install ( FILES ${PY_FILES} DESTINATION ${BIN_DIR} )
 install ( DIRECTORY PythonAlgorithms/ DESTINATION ${PLUGINS_DIR}/PythonAlgs
                                       PATTERN ".svn" EXCLUDE PATTERN "*.pyc" EXCLUDE )