Compile fixes for macOS/clang

cmake/CMakeBuild/bin/cmake.py

source/app/ldecod/annexb.c

source/app/ldecod/annexb.h

source/app/ldecod/decoder_test.c

source/app/ldecod/image.c

source/app/ldecod/output.c

source/app/ldecod/transform8x8.c

source/app/lencod/output.c

source/lib/lcommon/ifunctions.h

source/lib/lcommon/img_io.c

source/lib/lcommon/input.c

source/lib/lcommon/win32.c