tbb 4.0u1

This commit updates tbb to 4.0u1, which stands for Update 1.
Intel has been releasing for 3.x: Update 1, Update 2, Update 3....
The previous formula here was 3.x Update 8 (it went to 10). They
have been naming file archives based on the date the file was
uploaded, but that can change and our previous tarball is gone.
This compiles without error using gcc, clang, and llvm from
XCode-4.0.2 on 64bit Snow Leopard.
EDIT: added ENV.cc, ENV.cxx, and ENV.no_optimization

Closes Homebrew/homebrew#8355.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Formula/tbb.rb

@@ -1,17 +1,20 @@
 require 'formula'
 
 class Tbb < Formula
-  url 'http://www.threadingbuildingblocks.org/uploads/78/172/3.0%20update%208/tbb30_221oss_src.tgz'
-  version '30_221'
+  url 'http://threadingbuildingblocks.org/uploads/77/177/4.0%20update%201/tbb40_20111003oss_src.tgz'
+  version '4.0u1'
   homepage 'http://www.threadingbuildingblocks.org/'
-  sha1 '79c6b347f457e3176a5beae598a14b3a25bac4a0'
+  sha1 '1155b2fa6d5f2f92a766ca7919951992d37c1e08'
 
   def install
+    # Intel sets varying O levels on each compile command.
+    ENV.no_optimization
     # Override build prefix so we can copy the dylibs out of the same place
-    # no matter what system we're on
-    args = ['tbb_build_prefix=BUILDPREFIX']
+    # no matter what system we're on, and use our compilers.
+    args = ['tbb_build_prefix=BUILDPREFIX',
+            "CONLY=#{ENV.cc}",
+            "CPLUS=#{ENV.cxx}"]
     args << (MacOS.prefer_64_bit? ? "arch=intel64" : "arch=ia32")
-
     system "make", *args
     lib.install Dir['build/BUILDPREFIX_release/*.dylib']
     include.install 'include/tbb'