Reverse the split shift/fn

Turns out that 3c and 3d are not reversed when splitting the right
shift in the way that the Mark I layout does. Reversing it here, rather
than in the generic satan.h to avoid breaking the other layouts.

keyboards/satan/keymaps/mark1/keymap.c

@@ -6,16 +6,31 @@
 #define KC_HOME LCTL(KC_A) // Home, or ctrl-a
 #define KC_END LCTL(KC_E) // End, or ctrl-e
 
+// When using this split right shift layout, k3c and k3d are no longer reversed
+// as in other layouts
+#define COMPACT_KEYMAP_SPLIT_RSHIFT( \
+    k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0a, k0b, k0c, k0d, k49,\
+	k10, k11, k12, k13, k14, k15, k16, k17, k18, k19, k1a, k1b, k1c, k1d, \
+	k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b, k2c, k2d, \
+	k30, k31, k32, k33, k34, k35, k36, k37, k38, k39, k3a, k3b, k3c, k3d, \
+	k40, k41, k42,           k45,                     k4a, k4b, k4c, k4d  \
+) COMPACT_KEYMAP ( \
+    k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0a, k0b, k0c, k0d, k49,\
+	k10, k11, k12, k13, k14, k15, k16, k17, k18, k19, k1a, k1b, k1c, k1d, \
+	k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b, k2c, k2d, \
+	k30, k31, k32, k33, k34, k35, k36, k37, k38, k39, k3a, k3b, k3d, k3c, \
+	k40, k41, k42,           k45,                     k4a, k4b, k4c, k4d  \
+)
+
 // Mark I keyboard layout for GH60 Satan
 // http://www.keyboard-layout-editor.com/#/gists/e1cde292bd2094cc3b763206d4d2cfb5
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     // 0: qwerty
-    COMPACT_KEYMAP(
+    COMPACT_KEYMAP_SPLIT_RSHIFT(
         ESC, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSPC, NO,
         TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,BSLS,
         CAPS,A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,NO,  ENT ,
-        LSFT,FN , Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,RSFT,FN  ,
+        LSFT,FN , Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,RSFT,FN,
         LCTL,LALT,LGUI,          SPC,                     RGUI,RALT,RCTL,FNLK
     ),
     // 1: fn layer