Check in some old changes to the binding, from before I had commit access. - Add bindings for InsertValue and ExtractValue - Updates to use new APIs where they were renamed or removed. - Add generic error messages if LLVM didn't provide one. - Enable typesafe variadic arguments for GetGEP.

#!/bin/sh

g++ llvm-ext.cpp -c `llvm-config --cxxflags`
g++ llvm-opt.cpp -c `llvm-config --cxxflags`
g++ llvm-typemonitor.cpp -c `llvm-config --cxxflags`

rm -f libllvm-c-ext.a
ar rc libllvm-c-ext.a llvm-ext.o llvm-opt.o llvm-typemonitor.o
ranlib libllvm-c-ext.a