Build System

- Added new src/commands and src/columns intermediate libs.
- Began implementation of the first Command object.
- Began implementation of the first Column object.
- TDB2, Variant updates.

test/CMakeLists.txt

@@ -1,5 +1,7 @@
 cmake_minimum_required (VERSION 2.8)
 include_directories (${CMAKE_SOURCE_DIR}/src
+                     ${CMAKE_SOURCE_DIR}/src/commands
+                     ${CMAKE_SOURCE_DIR}/src/columns
                      ${CMAKE_SOURCE_DIR}/test
                      ${TASK_INCLUDE_DIRS})
 
@@ -17,5 +19,5 @@ add_custom_target (build_tests DEPENDS ${test_SRCS}
 
 foreach (src_FILE ${test_SRCS})
   add_executable (${src_FILE} "${src_FILE}.cpp" test.cpp)
-  target_link_libraries (${src_FILE} task ${TASK_LIBRARIES})
+  target_link_libraries (${src_FILE} task commands columns ${TASK_LIBRARIES})
 endforeach (src_FILE)