Path: Recognize COFF import library file magic.

Summary: Make identify_magic to recognize COFF import file.

Reviewers: Bigcheese

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2165

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194852 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Support/FileSystem.h

@@ -238,6 +238,7 @@ struct file_magic {
     macho_dsym_companion,     ///< Mach-O dSYM companion file
     macho_universal_binary,   ///< Mach-O universal binary
     coff_object,              ///< COFF object file
+    coff_import_library,      ///< COFF import library
     pecoff_executable,        ///< PECOFF executable file
     windows_resource          ///< Windows compiled resource file (.rc)
   };