Bug 1137532 - Update clang version to match the version used for Firefox. r=Callek on a CLOSED TREE

suite/config/tooltool-manifests/macosx64/releng.manifest

@@ -1,6 +1,6 @@
 [
 {
-"clang_version": "r170890"
+"clang_version": "r183744"
 },
 {
 "size": 47,
@@ -9,8 +9,8 @@
 "filename": "setup.sh"
 },
 {
-"size": 56126352,
-"digest": "e156e2a39abd5bf272ee30748a6825f22ddd27565b097c66662a2a6f2e9892bc5b4bf30a3552dffbe867dbfc39e7ee086e0b2cd7935f6ea216c0cf936178a88f",
+"size": 59602619,
+"digest": "86662ebc0ef650490559005948c4f0cb015dad72c7cac43732c2bf2995247081e30c139cf8008d19670a0009fc302c4eee2676981ee3f9ff4a15c01af22b783b",
 "algorithm": "sha512",
 "filename": "clang.tar.bz2"
 }