Remove ifdefs for _FX_MANAGED_CODE_.

third_party/libjpeg/jmorecfg.h

 /*
  * jmorecfg.h
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains additional configuration options that customize the
  * JPEG software for special applications or support machine-dependent
  * optimizations.  Most users will not need to touch this file.
@@ skipping 177 matching lines @@
  * or code profilers that require it.
  */
 
 /* a function called through method pointers: */
 #define METHODDEF(type)         static type
 /* a function used only in its module: */
 #define LOCAL(type)             static type
 /* a function referenced thru EXTERNs: */
 #define GLOBAL(type)            type
 
-#ifdef _FX_MANAGED_CODE_
-#define EXTERN(type)            extern "C" type
-#else
 /* a reference to a GLOBAL function: */
 #define EXTERN(type)            extern type
-#endif
 
 
 /* This macro is used to declare a "method", that is, a function pointer.
  * We want to supply prototype parameters if the compiler can cope.
  * Note that the arglist parameter must be parenthesized!
  * Again, you can customize this if you need special linkage keywords.
  */
 
 #ifdef HAVE_PROTOTYPES
 #define JMETHOD(type,methodname,arglist)  type (*methodname) arglist
@@ skipping 153 matching lines @@
 
 #ifndef FAST_FLOAT
 #ifdef HAVE_PROTOTYPES
 #define FAST_FLOAT  float
 #else
 #define FAST_FLOAT  double
 #endif
 #endif
 
 #endif /* JPEG_INTERNAL_OPTIONS */