Drop reference to cmake macro CMAKE_IMPORT_BUILD_SETTINGS and
CMAKE_EXPORT_BUILD_SETTINGS. Those macros seems to do nothing since CMake
2.8. It should allow to compile current trunk with cmake 3.0 wainting for the
new modular OTB which rewrite completely cmake configuration.

 All this stuff have been moved into Monteverdi
 To achieve this goal, I removed:
 - Utilities/FLTK
 - Code/Gui
 - Code/Visu (old visualization framework)
 - Code/Visualization
 - and their relative tests and examples
Some modifications have been also done into some CMakelists.txt to remove all links to visualization

OTB does not support anymore classes which use liblas in version 4.0:

-otbPointSetFileReader

You can still access to these classes, related tests and examples in OTB 3.20.

OTB does not support anymore classes which use pqxx in version 4.0:

Classes removed in OTBv4 are:
        - PostGISConnectionImplementation
        - PostGISTable
        - GISTableFunction
        - PostGISCreateTableTransactor
        - PostGISFromStringTransactor
        - PostGISQueryTransactor
        - TransactorGISTableFunction

You can still access to these classes, related tests and examples in OTB 3.20.

Ancient versions of CMake required else(), endif(), and similar block
termination commands to have arguments matching the command starting the
block.  This is no longer the preferred style.

NOTE: MUST USE GNU compliant version of sed
Run the following shell code (Adopted from Brad King scripts for CMake):

for c in else endif endforeach endfunction endmacro endwhile; do
    echo 's/\b'"$c"'\(\s*\)(.\+)/'"$c"'\1()/'
done >convert.sed \
&& git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' \
   | xargs sed -i -f convert.sed \
&& rm convert.sed


This has been adapted from ITK commit e52dbe7fa476f6283c9b9d1507fca052355113a4

This modification is based according to
the process described in ITK/Utilities/Maintenance/HowToCreateTheCMakeCaseConversion.txt