My previous CL, 24490, broke gomobile init for Windows users because
it failed to take the Windows ".exe" postfix into account everywhere.
Fix it by copying the entire "bin" directory from the llvm toolchain
instead of picking out certain named binaries.
Also, symlink (or, in Windows, copy) the clang lib64 directory into
each target platform where clang expects it.
Fixesgolang/go#16233
Change-Id: I8d966ca76bd22403ac2eacef3da7aae59e698059
Reviewed-on: https://go-review.googlesource.com/24720
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
8d3035464e