tip of tree broken with --enable-werror in configure

[reed kotler]

llvm[2]: Linking Debug+Asserts executable fpcmp
/home/rkotler/llvm_trunk/utils/TableGen/X86RecognizableInstr.cpp: In 
member function 'void 
llvm::X86Disassembler::RecognizableInstr::emitInstructionSpecifier()':
/home/rkotler/llvm_trunk/utils/TableGen/X86RecognizableInstr.cpp:489:3: 
error: comparison between signed and unsigned integer expressions 
[-Werror=sign-compare]
llvm[2]: ======= Finished Linking Debug+Asserts Executable not
make[2]: Leaving directory `/home/rkotler/llvm/build/utils/not'
llvm[2]: ======= Finished Linking Debug+Asserts Executable fpcmp
make[2]: Leaving directory `/home/rkotler/llvm/build/utils/fpcmp'
cc1plus: all warnings being treated as errors
/bin/rm: cannot remove 
`/home/rkotler/llvm/build/utils/TableGen/Debug+Asserts/X86RecognizableInstr.d.tmp': 
No such file or directory
make[2]: *** 
[/home/rkotler/llvm/build/utils/TableGen/Debug+Asserts/X86RecognizableInstr.o] 
Error 1
make[2]: Leaving directory `/home/rkotler/llvm/build/utils/TableGen'
make[1]: *** [TableGen/.makeall] Error 2
make[1]: *** Waiting for unfinished jobs....
llvm[3]: Building Debug+Asserts Archive Library libgtest_main.a
make[3]: Leaving directory 
`/home/rkotler/llvm/build/utils/unittest/UnitTestMain'
llvm[3]: Building Debug+Asserts Archive Library libgtest.a
make[3]: Leaving directory 
`/home/rkotler/llvm/build/utils/unittest/googletest'
make[2]: Leaving directory `/home/rkotler/llvm/build/utils/unittest'
make[1]: Leaving directory `/home/rkotler/llvm/build/utils'
make: *** [all] Error 1
rkotler at mipssw006:~/llvm/build$