STYLE: remove all leading space and tabs from cmake files

CMake/FindOSGeo4W.cmake

Code/Wrappers/PyQt/CMakeLists.txt

Examples/CMakeLists.txt

Testing/Applications/CartographicDBValidation/CMakeLists.txt

Testing/Applications/FeatureExtraction/CMakeLists.txt

Testing/Applications/Rasterization/CMakeLists.txt

Testing/Applications/Segmentation/CMakeLists.txt

Testing/Code/DisparityMap/CMakeLists.txt

Testing/Code/Learning/CMakeLists.txt

Utilities/FLTK/CMakeLists.txt

Utilities/otbliblas/include/CMakeLists.txt

Utilities/otbopenjpeg/CMake/TestLargeFiles.cmake