remove include memory.h from vim.h
remove proto.h include from vim.h
remove stdbool include from vim.h and globals.h
move memory.h include to version.c
move ascii.h out of vim.h
move locale.h out of vim.h
move sys/select.h include to os_unix.c
move <inttypes.h> include out of vim.h
move wctype.h out of vim.h