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/rdrle.c b/rdrle.c
index bb14879..e3509e7 100644
--- a/rdrle.c
+++ b/rdrle.c
@@ -62,7 +62,7 @@
  * then fetch the required row from the virtual array on subsequent calls.
  */
 
-typedef struct _rle_source_struct * rle_source_ptr;
+typedef struct _rle_source_struct *rle_source_ptr;
 
 typedef struct _rle_source_struct {
   struct cjpeg_source_struct pub; /* public fields */
@@ -216,7 +216,7 @@
   colormap = source->header.cmap;
   dest_row = source->pub.buffer[0];
   source->row--;
-  src_row = * (*cinfo->mem->access_virt_sarray)
+  src_row = *(*cinfo->mem->access_virt_sarray)
     ((j_common_ptr) cinfo, source->image, source->row, (JDIMENSION) 1, FALSE);
 
   for (col = cinfo->image_width; col > 0; col--) {
@@ -289,7 +289,7 @@
   case MAPPEDGRAY:
   case TRUECOLOR:
     for (row = 0; row < cinfo->image_height; row++) {
-      scanline = * (*cinfo->mem->access_virt_sarray)
+      scanline = *(*cinfo->mem->access_virt_sarray)
         ((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE);
       rle_row = source->rle_row;
       rle_getrow(&source->header, rle_row);
@@ -312,7 +312,7 @@
 
   case DIRECTCOLOR:
     for (row = 0; row < cinfo->image_height; row++) {
-      scanline = * (*cinfo->mem->access_virt_sarray)
+      scanline = *(*cinfo->mem->access_virt_sarray)
         ((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE);
       rle_getrow(&source->header, rle_row);