[Beignet] [PATCH 16/18] Enable the libocl to replace the huge PCH header.

[Song, Ruiling]

According to Lv Meng's patch "Fix compile warnings for icc compiler", in c++0x std::auto_ptr will be deprecated in favor of std::unique_ptr. 
+    std::auto_ptr<Module> M;
+
+    /* Before do any thing, we first filter in all CL functions in bitcode. */ 
+    M.reset(runBitCodeLinker(cl_mod));
+    if (!module)
+      delete cl_mod;