要提交的变更：
	删除:         build/CMakeFiles/2.8.12.2/CMakeCCompiler.cmake
	删除:         build/CMakeFiles/2.8.12.2/CMakeCXXCompiler.cmake
	删除:         build/CMakeFiles/2.8.12.2/CMakeDetermineCompilerABI_C.bin
	删除:         build/CMakeFiles/2.8.12.2/CMakeDetermineCompilerABI_CXX.bin
	删除:         build/CMakeFiles/2.8.12.2/CMakeSystem.cmake
	删除:         build/CMakeFiles/2.8.12.2/CompilerIdC/CMakeCCompilerId.c
	删除:         build/CMakeFiles/2.8.12.2/CompilerIdC/a.out
	删除:         build/CMakeFiles/2.8.12.2/CompilerIdCXX/CMakeCXXCompilerId.cpp
	删除:         build/CMakeFiles/2.8.12.2/CompilerIdCXX/a.out
	删除:         build/CMakeFiles/CMakeDirectoryInformation.cmake
	删除:         build/CMakeFiles/cmake.check_cache
	删除:         build/CTestTestfile.cmake
	删除:         build/bin/CMakeFiles/CMakeDirectoryInformation.cmake
	删除:         build/bin/CMakeFiles/main.dir/DependInfo.cmake
	删除:         build/bin/CMakeFiles/main.dir/build.make
	删除:         build/bin/CMakeFiles/main.dir/cmake_clean.cmake
	删除:         build/bin/CMakeFiles/main.dir/depend.make
	删除:         build/bin/CMakeFiles/main.dir/flags.make
	删除:         build/bin/CMakeFiles/main.dir/link.txt
	删除:         build/bin/CMakeFiles/progress.marks
	删除:         build/bin/Makefile
	删除:         build/bin/cmake_install.cmake
	删除:         build/cmake_install.cmake
	删除:         build/lib/CMakeFiles/CMakeDirectoryInformation.cmake
	删除:         build/lib/CMakeFiles/hello.dir/DependInfo.cmake
	删除:         build/lib/CMakeFiles/hello.dir/build.make
	删除:         build/lib/CMakeFiles/hello.dir/cmake_clean.cmake
	删除:         build/lib/CMakeFiles/hello.dir/depend.make
	删除:         build/lib/CMakeFiles/hello.dir/flags.make
	删除:         build/lib/CMakeFiles/hello.dir/link.txt
	删除:         build/lib/CMakeFiles/hello.dir/progress.make
	删除:         build/lib/cmake_install.cmake