* include/zilog/Makefile.am: Use 'PREINSTALL_FILES ='.
* include/motorola/Makefile.am: Use 'PREINSTALL_FILES ='.
* include/sys/Makefile.am: Use 'PREINSTALL_FILES ='.
* include/rtems/Makefile.am: Use 'PREINSTALL_FILES ='.
* include/Makefile.am: Use 'PREINSTALL_FILES ='.