Revisit these options:
	CONFIG_FEATURE_INSTALLER
		would users really need this?
		space difference looks negligible
	CONFIG_LOCALE_SUPPORT
		space difference looks negligible in code
		time difference probably negligible:
			most changes add setlocale() or change strcmp() to strcoll()
	CONFIG_UNICODE_*
	CONFIG_FEATURE_SUID_CONFIG
		might be useful for tuning security settings (like sudo)
	CONFIG_FEATURE_SYSTEMD
	CONFIG_FEATURE_ETC_NETWORKS
	CONFIG_FEATURE_EDITING_VI
		code added in libbb/lineedit.c looks non-negligible
		required by POSIX.1 XCU
	CONFIG_FEATURE_EDITING_SAVEHISTORY
		Bradley Kuhn would want this enabled ;)
		code added looks non-negligible
	CONFIG_FEATURE_TAB_COMPLETION
		code added is large
		useful and popular feature
	CONFIG_BOOTCHARTD
		might be nice to trace boot time in an OS hackers' build of BusyBox
	CONFIG_FEATURE_INIT_SCTTY
	CONFIG_ASH_JOB_CONTROL
	CONFIG_ASH_BUILTIN_*
	CONFIG_ASH_CMDCMD
	CONFIG_ASH_OPTIMIZE_FOR_SIZE
	CONFIG_CTTYHACK
		mind this in /etc/inittab
	CONFIG_FEATURE_MOUNT_NFS
	CONFIG_FEATURE_MOUNT_CIFS
	CONFIG_READPROFILE
		code is a 263-line source file
		might be nice to do profiling in an OS hackers' build of BusyBox
	CONFIG_FEATURE_DATE_ISOFMT
		not in POSIX.1
		adds no additional code
		would be nice to have more adoption of ISO 8601
	CONFIG_ED
		required by POSIX.1-2008 XCU
		interactive program, unlikely to ever be used in any shell scripts
		old and simple editor, unlikely to ever be used by any user
		vi will be just as easily available to use
	CONFIG_USE_BB_PWD_GRP
		will be using EGLIBC's NSS for file/DNS name resolution anyway
		might as well use it for passwd/group file lookups
		will use BusyBox's lookup functions with uClibc
	CONFIG_FEATURE_CHECK_NAMES
		adds a 62-line source file with one function to the build
		will end users be adding users and groups to the system?
General notes:
	it might be useful to build two BusyBox packages:
		one configured for end-users
		one configured for OS hackers