Task #5921: Reverted all changes on this branch. I'm going to solve this issue in a more pragmatic and less intrusive way.

Task #5912: Added simple wrapper to target_link_libraries() in MAC/APL for its subpackages, which use target_link_libraries() quite often.

- New lofar_package() macro replaces lofar_add_package(). The new macro
  supports recursive addition of LOFAR packages, using the dependencies passed
  as arguments. For example: 
    lofar_package(Blob 1.0 DEPENDS Common) 
  will add the package Common to the build (unless it was already added).
  This new features enables a "top-down" package specification order, which is
  required for building subsystems.

- New lofar_add_package() macro replaces lofar_add_subdirectory(). This macro
  uses a ${pkg}_SOURCE_DIR variable to locate the source directory of the
  package <pkg>. This information is needed, as we cannot simply include
  actual subdirectories anymore, because dependent package(s) might be located
  in a different directory tree.

- New file LofarPackageList.cmake, which sets the ${pkg}_SOURCE_DIR variables.
  This file is generated by a script gen_LofarPackageList_cmake.sh, which must
  be rerun when LOFAR packages are added, moved, or removed.

Bug 1310: Several small fixes. Output of CMake build and Autotools build of MAC is now almost identical

* Added RTDBCommon to CMake build.
* Optional package-specific search path is now prepended to search path.

* Added APLCommon to the CMake build.
* Use of INCLUDE_PATH_SUFFIX is now optional.
* Removed EXCLUDE_FROM_ALL from add_subdirectory(test).

rev. 12447-13413 with the trunk.

have been udpated.

Accidentally committed temporary changes

fixed path to unixodbc

Put first argument of AC_DEFUN (name of the funtion) in [] quotes. This
is required on newer versions of automake and is backward compatible with
older versions. For more information see: info '(automake)Extending aclocal'.

Use lofar_EXTERNAL

Better use of ][ around AC_CHECK_FILE

Updated comments

Use lofar_variant to deduce full compiler name (like gnu3)

Improved for new location of blitz

Added with-blitz-libdir
Added option to make blitz++ mandatory

First version