Avoid unnecessary remainder calculations

Detail:
  s/StartUp - Avoid unnecessary remainder calculations in DivRem macro
Admin:
  Tested on Cortex-A15


Version 0.20. Tagged as 'DragASprit-0_20'

VersionASM

@@ -11,13 +11,13 @@
                         GBLS    Module_HelpVersion
                         GBLS    Module_ComponentName
                         GBLS    Module_ComponentPath
-Module_MajorVersion     SETS    "0.19"
-Module_Version          SETA    19
+Module_MajorVersion     SETS    "0.20"
+Module_Version          SETA    20
 Module_MinorVersion     SETS    ""
-Module_Date             SETS    "05 Jul 2014"
-Module_ApplicationDate  SETS    "05-Jul-14"
+Module_Date             SETS    "08 May 2016"
+Module_ApplicationDate  SETS    "08-May-16"
 Module_ComponentName    SETS    "DragASprit"
 Module_ComponentPath    SETS    "castle/RiscOS/Sources/Desktop/DragASprit"
-Module_FullVersion      SETS    "0.19"
-Module_HelpVersion      SETS    "0.19 (05 Jul 2014)"
+Module_FullVersion      SETS    "0.20"
+Module_HelpVersion      SETS    "0.20 (08 May 2016)"
                         END

VersionNum

-/* (0.19)
+/* (0.20)
  *
  * This file is automatically maintained by srccommit, do not edit manually.
  * Last processed by srccommit version: 1.1.
  *
  */
-#define Module_MajorVersion_CMHG        0.19
+#define Module_MajorVersion_CMHG        0.20
 #define Module_MinorVersion_CMHG        
-#define Module_Date_CMHG                05 Jul 2014
+#define Module_Date_CMHG                08 May 2016
 
-#define Module_MajorVersion             "0.19"
-#define Module_Version                  19
+#define Module_MajorVersion             "0.20"
+#define Module_Version                  20
 #define Module_MinorVersion             ""
-#define Module_Date                     "05 Jul 2014"
+#define Module_Date                     "08 May 2016"
 
-#define Module_ApplicationDate          "05-Jul-14"
+#define Module_ApplicationDate          "08-May-16"
 
 #define Module_ComponentName            "DragASprit"
 #define Module_ComponentPath            "castle/RiscOS/Sources/Desktop/DragASprit"
 
-#define Module_FullVersion              "0.19"
-#define Module_HelpVersion              "0.19 (05 Jul 2014)"
-#define Module_LibraryVersionInfo       "0:19"
+#define Module_FullVersion              "0.20"
+#define Module_HelpVersion              "0.20 (08 May 2016)"
+#define Module_LibraryVersionInfo       "0:20"

s/StartUp

@@ -1177,7 +1177,7 @@ GTDS_frame_size * :INDEX: @
         RSB     r3, r3, #256 ; r3 = Ac
         ; Calculate s
         MOV     r4, r4, LSL #8
-        DivRem  r8, r4, r3, lr ; r8 = s
+        DivRem  r8, r4, r3, lr, norem ; r8 = s
         ; Calculate final RGB
         ; This is rather simple, since we want the drop shadow to be black
         MUL     r5, r8, r5