Use consistent/modern code formatting for pointers

The convention used by libjpeg:

    type * variable;

is not very common anymore, because it looks too much like
multiplication.  Some (particularly C++ programmers) prefer to tuck the
pointer symbol against the type:

    type* variable;

to emphasize that a pointer to a type is effectively a new type.
However, this can also be confusing, since defining multiple variables
on the same line would not work properly:

    type* variable1, variable2;  /* Only variable1 is actually a
                                    pointer. */

This commit reformats the entirety of the libjpeg-turbo code base so
that it uses the same code formatting convention for pointers that the
TurboJPEG API code uses:

    type *variable1, *variable2;

This seems to be the most common convention among C programmers, and
it is the convention used by other codec libraries, such as libpng and
libtiff.
diff --git a/jcdctmgr.c b/jcdctmgr.c
index abbbe2a..f3919b9 100644
--- a/jcdctmgr.c
+++ b/jcdctmgr.c
@@ -25,21 +25,21 @@
 
 /* Private subobject for this module */
 
-typedef void (*forward_DCT_method_ptr) (DCTELEM * data);
-typedef void (*float_DCT_method_ptr) (FAST_FLOAT * data);
+typedef void (*forward_DCT_method_ptr) (DCTELEM *data);
+typedef void (*float_DCT_method_ptr) (FAST_FLOAT *data);
 
 typedef void (*convsamp_method_ptr) (JSAMPARRAY sample_data,
                                      JDIMENSION start_col,
-                                     DCTELEM * workspace);
+                                     DCTELEM *workspace);
 typedef void (*float_convsamp_method_ptr) (JSAMPARRAY sample_data,
                                            JDIMENSION start_col,
                                            FAST_FLOAT *workspace);
 
-typedef void (*quantize_method_ptr) (JCOEFPTR coef_block, DCTELEM * divisors,
-                                     DCTELEM * workspace);
+typedef void (*quantize_method_ptr) (JCOEFPTR coef_block, DCTELEM *divisors,
+                                     DCTELEM *workspace);
 typedef void (*float_quantize_method_ptr) (JCOEFPTR coef_block,
-                                           FAST_FLOAT * divisors,
-                                           FAST_FLOAT * workspace);
+                                           FAST_FLOAT *divisors,
+                                           FAST_FLOAT *workspace);
 
 METHODDEF(void) quantize (JCOEFPTR, DCTELEM *, DCTELEM *);
 
@@ -55,22 +55,22 @@
    * entries, because of scaling (especially for an unnormalized DCT).
    * Each table is given in normal array order.
    */
-  DCTELEM * divisors[NUM_QUANT_TBLS];
+  DCTELEM *divisors[NUM_QUANT_TBLS];
 
   /* work area for FDCT subroutine */
-  DCTELEM * workspace;
+  DCTELEM *workspace;
 
 #ifdef DCT_FLOAT_SUPPORTED
   /* Same as above for the floating-point case. */
   float_DCT_method_ptr float_dct;
   float_convsamp_method_ptr float_convsamp;
   float_quantize_method_ptr float_quantize;
-  FAST_FLOAT * float_divisors[NUM_QUANT_TBLS];
-  FAST_FLOAT * float_workspace;
+  FAST_FLOAT *float_divisors[NUM_QUANT_TBLS];
+  FAST_FLOAT *float_workspace;
 #endif
 } my_fdct_controller;
 
-typedef my_fdct_controller * my_fdct_ptr;
+typedef my_fdct_controller *my_fdct_ptr;
 
 
 #if BITS_IN_JSAMPLE == 8
@@ -170,7 +170,7 @@
  */
 
 LOCAL(int)
-compute_reciprocal (UINT16 divisor, DCTELEM * dtbl)
+compute_reciprocal (UINT16 divisor, DCTELEM *dtbl)
 {
   UDCTELEM2 fq, fr;
   UDCTELEM c;
@@ -238,8 +238,8 @@
   my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct;
   int ci, qtblno, i;
   jpeg_component_info *compptr;
-  JQUANT_TBL * qtbl;
-  DCTELEM * dtbl;
+  JQUANT_TBL *qtbl;
+  DCTELEM *dtbl;
 
   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
        ci++, compptr++) {
@@ -332,7 +332,7 @@
          * What's actually stored is 1/divisor so that the inner loop can
          * use a multiplication rather than a division.
          */
-        FAST_FLOAT * fdtbl;
+        FAST_FLOAT *fdtbl;
         int row, col;
         static const double aanscalefactor[DCTSIZE] = {
           1.0, 1.387039845, 1.306562965, 1.175875602,
@@ -370,7 +370,7 @@
  */
 
 METHODDEF(void)
-convsamp (JSAMPARRAY sample_data, JDIMENSION start_col, DCTELEM * workspace)
+convsamp (JSAMPARRAY sample_data, JDIMENSION start_col, DCTELEM *workspace)
 {
   register DCTELEM *workspaceptr;
   register JSAMPROW elemptr;
@@ -405,7 +405,7 @@
  */
 
 METHODDEF(void)
-quantize (JCOEFPTR coef_block, DCTELEM * divisors, DCTELEM * workspace)
+quantize (JCOEFPTR coef_block, DCTELEM *divisors, DCTELEM *workspace)
 {
   int i;
   DCTELEM temp;
@@ -487,7 +487,7 @@
  */
 
 METHODDEF(void)
-forward_DCT (j_compress_ptr cinfo, jpeg_component_info * compptr,
+forward_DCT (j_compress_ptr cinfo, jpeg_component_info *compptr,
              JSAMPARRAY sample_data, JBLOCKROW coef_blocks,
              JDIMENSION start_row, JDIMENSION start_col,
              JDIMENSION num_blocks)
@@ -495,8 +495,8 @@
 {
   /* This routine is heavily used, so it's worth coding it tightly. */
   my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct;
-  DCTELEM * divisors = fdct->divisors[compptr->quant_tbl_no];
-  DCTELEM * workspace;
+  DCTELEM *divisors = fdct->divisors[compptr->quant_tbl_no];
+  DCTELEM *workspace;
   JDIMENSION bi;
 
   /* Make sure the compiler doesn't look up these every pass */
@@ -524,7 +524,7 @@
 
 
 METHODDEF(void)
-convsamp_float (JSAMPARRAY sample_data, JDIMENSION start_col, FAST_FLOAT * workspace)
+convsamp_float (JSAMPARRAY sample_data, JDIMENSION start_col, FAST_FLOAT *workspace)
 {
   register FAST_FLOAT *workspaceptr;
   register JSAMPROW elemptr;
@@ -555,7 +555,7 @@
 
 
 METHODDEF(void)
-quantize_float (JCOEFPTR coef_block, FAST_FLOAT * divisors, FAST_FLOAT * workspace)
+quantize_float (JCOEFPTR coef_block, FAST_FLOAT *divisors, FAST_FLOAT *workspace)
 {
   register FAST_FLOAT temp;
   register int i;
@@ -577,7 +577,7 @@
 
 
 METHODDEF(void)
-forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info * compptr,
+forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info *compptr,
                    JSAMPARRAY sample_data, JBLOCKROW coef_blocks,
                    JDIMENSION start_row, JDIMENSION start_col,
                    JDIMENSION num_blocks)
@@ -585,8 +585,8 @@
 {
   /* This routine is heavily used, so it's worth coding it tightly. */
   my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct;
-  FAST_FLOAT * divisors = fdct->float_divisors[compptr->quant_tbl_no];
-  FAST_FLOAT * workspace;
+  FAST_FLOAT *divisors = fdct->float_divisors[compptr->quant_tbl_no];
+  FAST_FLOAT *workspace;
   JDIMENSION bi;