Format preprocessor macros more consistently

Within the libjpeg API code, it seems to be more the convention than not
to separate the macro name and value by two or more spaces, which
improves general readability.  Making this consistent across all of
libjpeg-turbo is less about my individual preferences and more about
making it easy to automatically detect variations from our chosen
formatting convention.  I intend to release the script I'm using to
validate this stuff, once it matures and stabilizes a bit.

jmorecfg.h

@@ -333,37 +333,37 @@ typedef int boolean;
 #define RGB_BLUE        2       /* Offset of Blue */
 #define RGB_PIXELSIZE   3       /* JSAMPLEs per RGB scanline element */
 
-#define JPEG_NUMCS 17
+#define JPEG_NUMCS  17
 
-#define EXT_RGB_RED        0
-#define EXT_RGB_GREEN      1
-#define EXT_RGB_BLUE       2
-#define EXT_RGB_PIXELSIZE  3
+#define EXT_RGB_RED         0
+#define EXT_RGB_GREEN       1
+#define EXT_RGB_BLUE        2
+#define EXT_RGB_PIXELSIZE   3
 
-#define EXT_RGBX_RED       0
-#define EXT_RGBX_GREEN     1
-#define EXT_RGBX_BLUE      2
-#define EXT_RGBX_PIXELSIZE 4
+#define EXT_RGBX_RED        0
+#define EXT_RGBX_GREEN      1
+#define EXT_RGBX_BLUE       2
+#define EXT_RGBX_PIXELSIZE  4
 
-#define EXT_BGR_RED        2
-#define EXT_BGR_GREEN      1
-#define EXT_BGR_BLUE       0
-#define EXT_BGR_PIXELSIZE  3
+#define EXT_BGR_RED         2
+#define EXT_BGR_GREEN       1
+#define EXT_BGR_BLUE        0
+#define EXT_BGR_PIXELSIZE   3
 
-#define EXT_BGRX_RED       2
-#define EXT_BGRX_GREEN     1
-#define EXT_BGRX_BLUE      0
-#define EXT_BGRX_PIXELSIZE 4
+#define EXT_BGRX_RED        2
+#define EXT_BGRX_GREEN      1
+#define EXT_BGRX_BLUE       0
+#define EXT_BGRX_PIXELSIZE  4
 
-#define EXT_XBGR_RED       3
-#define EXT_XBGR_GREEN     2
-#define EXT_XBGR_BLUE      1
-#define EXT_XBGR_PIXELSIZE 4
+#define EXT_XBGR_RED        3
+#define EXT_XBGR_GREEN      2
+#define EXT_XBGR_BLUE       1
+#define EXT_XBGR_PIXELSIZE  4
 
-#define EXT_XRGB_RED       1
-#define EXT_XRGB_GREEN     2
-#define EXT_XRGB_BLUE      3
-#define EXT_XRGB_PIXELSIZE 4
+#define EXT_XRGB_RED        1
+#define EXT_XRGB_GREEN      2
+#define EXT_XRGB_BLUE       3
+#define EXT_XRGB_PIXELSIZE  4
 
 static const int rgb_red[JPEG_NUMCS] = {
   -1, -1, RGB_RED, -1, -1, -1, EXT_RGB_RED, EXT_RGBX_RED,
@@ -404,7 +404,7 @@ static const int rgb_pixelsize[JPEG_NUMCS] = {
 #ifndef WITH_SIMD
 #define MULTIPLIER  int         /* type for fastest integer multiply */
 #else
-#define MULTIPLIER short  /* prefer 16-bit with SIMD for parellelism */
+#define MULTIPLIER  short       /* prefer 16-bit with SIMD for parellelism */
 #endif
 #endif