tar: fix prototype typo, not for android config

Change-Id: I18875e8e8dae4858766d7ddf5b57c11cd8d0823b
busybox-full: enable some new applets

 chvt, deallocvt, fgconsole
 findfs, hwclock, lspci, nmeter
 openvt, rdate, setkeycodes, smemcap

 also enable swapon -p priority, and wc large support

 Unsymlinked: switch_root (only useful in static version)

 setkeycodes can be used to map usb keyboard special keys
 or on devices like tablet pcs with special keys

 Tested on x86 and arm targets

Change-Id: Ib0655715897f4088a81efb4ca74731b60c14ac23