Update to libjpeg_turbo 1.4.90

jchuff.h

 /*
  * jchuff.h
  *
+ * This file was part of the Independent JPEG Group's software:
  * 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.
+ * It was modified by The libjpeg-turbo Project to include only code relevant
+ * to libjpeg-turbo.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
  *
  * This file contains declarations for Huffman entropy encoding routines
  * that are shared between the sequential encoder (jchuff.c) and the
  * progressive encoder (jcphuff.c).  No other modules need to see these.
  */
 
 /* The legal range of a DCT coefficient is
  *  -1024 .. +1023  for 8-bit data;
  * -16384 .. +16383 for 12-bit data.
  * Hence the magnitude should always fit in 10 or 14 bits respectively.
  */
 
 #if BITS_IN_JSAMPLE == 8
 #define MAX_COEF_BITS 10
 #else
 #define MAX_COEF_BITS 14
 #endif
 
 /* Derived data constructed for each Huffman table */
 
 typedef struct {
-  unsigned int ehufco[256];     /* code for each symbol */
-  char ehufsi[256];             /* length of code for each symbol */
+  unsigned int ehufco[256];     /* code for each symbol */
+  char ehufsi[256];             /* length of code for each symbol */
   /* If no code has been allocated for a symbol S, ehufsi[S] contains 0 */
 } c_derived_tbl;
 
-/* Short forms of external names for systems with brain-damaged linkers. */
-
-#ifdef NEED_SHORT_EXTERNAL_NAMES
-#define jpeg_make_c_derived_tbl jMkCDerived
-#define jpeg_gen_optimal_table  jGenOptTbl
-#endif /* NEED_SHORT_EXTERNAL_NAMES */
-
 /* Expand a Huffman table definition into the derived format */
 EXTERN(void) jpeg_make_c_derived_tbl
-        JPP((j_compress_ptr cinfo, boolean isDC, int tblno,
-             c_derived_tbl ** pdtbl));
+        (j_compress_ptr cinfo, boolean isDC, int tblno,
+         c_derived_tbl ** pdtbl);
 
 /* Generate an optimal table definition given the specified counts */
 EXTERN(void) jpeg_gen_optimal_table
-        JPP((j_compress_ptr cinfo, JHUFF_TBL * htbl, long freq[]));
+        (j_compress_ptr cinfo, JHUFF_TBL *htbl, long freq[]);