[BusyBox] USE_SYSTEM_PWD_GRP still shows up in a couple of comments.

[Rob Landley]

find . -type f | xargs grep USE_SYSTEM_PWD_G
./debian/changelog:  * Force USE_SYSTEM_PWD_GRP=false, so busybox bypasses
./include/grp_.h:#endif /* USE_SYSTEM_PWD_GRP */
./include/pwd_.h:#endif /* USE_SYSTEM_PWD_GRP */

Rob