Bug#823939: llvm-toolchain-3.6: Fails to build with bash

[Александр Волков]

Package: llvm-toolchain-3.6
Version: 3.6.2-3

Build fails with the following message:

cd build-llvm \
if test -d Release+Asserts -a ! -e Release; then \
     ln -s Release+Asserts Release; \
fi
/bin/sh: -c: line 1: syntax error near unexpected token `then'
/bin/sh: -c: line 1: `if test -d Release+Asserts -a ! -e Release; then \'

A semicolon is missing after 'cd build-llvm'.
It would be nice to have it fixed in all llvm-toolchain branches 
(3.4...3.8),
or at least in 3.6...3.8.