Be aware of (x86_64-redhat-linux6E-)g++44 on RHEL5.

AFAIK, RHEL5 (and its clones) provides g++44 as the package "gcc44-c++".
By default, g++-4.1.1 is available, though, its libstdc++ would not be suitable to clang++.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133156 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/InitHeaderSearch.cpp b/lib/Frontend/InitHeaderSearch.cpp
index ad93116..1fd4b5a 100644
--- a/lib/Frontend/InitHeaderSearch.cpp
+++ b/lib/Frontend/InitHeaderSearch.cpp
@@ -733,6 +733,9 @@
                                 "x86_64-redhat-linux", "32", "", triple);
     AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.5.1",
                                 "i686-redhat-linux", "", "", triple);
+    // RHEL5(gcc44)
+    AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.4",
+                                "x86_64-redhat-linux6E", "32", "", triple);
     // Fedora 13
     AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.4",
                                 "x86_64-redhat-linux", "32", "", triple);