Switch llvm-alt-sys dependency to llvm-sys, the fork is no longer

neccessary

Author: TomBebbington

Cargo.lock

@@ -9,7 +9,7 @@ license = "BSD-3-Clause"
 name = "llvm-alt"
 readme = "README.md"
 repository = "https://github.com/TomBebbington/llvm-rs"
-version = "0.3.1"
+version = "0.3.2"
 
 [lib]
 
@@ -21,4 +21,4 @@ lto = true
 [dependencies]
 cbox = "*"
 libc = "*"
-llvm-alt-sys = "*"
+llvm-sys = "*"