make on 4.9 for 5.2 broken

[Danny Braniss]

with the latest cvsup i can no longer make build* on a 4.9 for current
example:
make buildkernel KENRCONF=HUJI
...
cc -c -O -pipe -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes 
-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual -fformat-extensions 
-std=c99 -g -nostdinc -I- -I. -I/r+d/5.2/src/sys -I/r+d/5.2/src/sys/contrib/dev
/acpica -I/r+d/5.2/src/sys/contrib/ipfilter -I/r+d/5.2/src/sys/contrib/dev/ath 
-I/r+d/5.2/src/sys/contrib/dev/ath/freebsd -I/r+d/5.2/src/sys/contrib/ngatm 
-D_KERNEL -include opt_global.h -finline-limit=15000 -mno-align-long-strings 
-mpreferred-stack-boundary=2 -ffreestanding /r+d/5.2/src/sys/i386/i386/genassym
.c
cc1: Invalid option `no-align-long-strings'
cc1: unknown C standard `c99'
cc1: Invalid option `-finline-limit=15000'
*** Error code 1