troubles compiling latest RELENG_6

[Tofik Suleymanov]

After cvsuping latest RELENG_6:

make buildworld ( executes fine)
make buildkernel (gives an error - look below)

cc -c -O -pipe -march=pentium3 -Wall -Wredundant-decls -Wnested-externs 
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline 
-Wcast-qual  -fformat-extensions -std=c99 -g -nostdinc -I-  -I. 
-I/usr/src/sys -I/usr/src/sys/contrib/altq 
-I/usr/src/sys/contrib/ipfilter -I/usr/src/sys/contrib/pf 
-I/usr/src/sys/contrib/dev/ath -I/usr/src/sys/contrib/dev/ath/freebsd 
-I/usr/src/sys/contrib/ngatm -I/usr/src/sys/dev/twa -D_KERNEL 
-DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -fno-common 
-finline-limit=8000 --param inline-unit-growth=100 --param 
large-function-growth=1000  -mno-align-long-strings 
-mpreferred-stack-boundary=2  -mno-mmx -mno-3dnow -mno-sse -mno-sse2 
-ffreestanding -Werror  /usr/src/sys/net80211/ieee80211_ioctl.c
/usr/src/sys/net80211/ieee80211_ioctl.c: In function 
`ieee80211_ioctl_get80211':
/usr/src/sys/net80211/ieee80211_ioctl.c:1483: error: 
`IEEE80211_IOC_MCAST_RATE' undeclared (first use in this function)
/usr/src/sys/net80211/ieee80211_ioctl.c:1483: error: (Each undeclared 
identifier is reported only once
/usr/src/sys/net80211/ieee80211_ioctl.c:1483: error: for each function 
it appears in.)
/usr/src/sys/net80211/ieee80211_ioctl.c:1484: error: structure has no 
member named `ic_mcast_rate'
/usr/src/sys/net80211/ieee80211_ioctl.c: In function 
`ieee80211_ioctl_set80211':
/usr/src/sys/net80211/ieee80211_ioctl.c:2375: error: 
`IEEE80211_IOC_MCAST_RATE' undeclared (first use in this function)
/usr/src/sys/net80211/ieee80211_ioctl.c:2376: error: structure has no 
member named `ic_mcast_rate'
*** Error code 1

Stop in /usr/obj/usr/src/sys/GENERIC.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
paranoia#                                             

Any suggestions or ideas ?