compiler-rt: sys/timeb.h is deprecated

build llvm suits in FreeBSD, then:
svn up the llvm, compiler-rt etc code, then build, and see these:

^
1 error generated.
*** Error code 1

Stop.
make[5]: stopped in /usr/home/J/local/src/llvm/build/projects/compiler-rt/src/compiler-rt-build
*** Error code 1

Stop.
make[4]: stopped in /usr/home/J/local/src/llvm/build/projects/compiler-rt/src/compiler-rt-build
*** Error code 1

Stop.
make[3]: stopped in /usr/home/J/local/src/llvm/build/projects/compiler-rt/src/compiler-rt-build
*** Error code 1

Stop.
make[2]: stopped in /usr/home/J/local/src/llvm/build
*** Error code 1

Stop.
make[1]: stopped in /usr/home/J/local/src/llvm/build
*** Error code 1

Stop.
make: stopped in /usr/home/J/local/src/llvm/build