Fix generation and installation of header files

Generate openblas_config.h and f77blas.h with same contents as in plain Makefile builds and install only the public header files

CMakeLists.txt

@@ -267,7 +267,6 @@ if(NOT NO_LAPACKE)
 	)
 	install (FILES ${CMAKE_BINARY_DIR}/lapacke_mangling.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 endif()
-
  
 if(NOT MSVC)
 	install (TARGETS ${OpenBLAS_LIBNAME}_static DESTINATION ${CMAKE_INSTALL_LIBDIR})