sprites: address #1210; fix tripod offsets. (#1212)

The sprite is now centered around the main body, rather than having it jump around all over the place while both walking and shooting.

buildcfg.txt

@@ -1878,50 +1878,50 @@ TROOS0	30	31
 TROOT0	31	28
 TROOU0	32	28
 
-CYBRA1    47   103  ; Cyberdemon
+CYBRA1	47	102  ; Cyberdemon
-CYBRA2A8  39   103
+CYBRA2A8	46	101
-CYBRA3A7  42   103
+CYBRA3A7	34	103
-CYBRA4A6  41   102
+CYBRA4A6	22	101
-CYBRA5    48   103
+CYBRA5	32	105
-CYBRB1    50   100
+CYBRB1	50	100
-CYBRB2B8  39   96
+CYBRB2B8	46	100
-CYBRB3B7  54   103
+CYBRB3B7	54	103
-CYBRB4B6  49   99
+CYBRB4B6	49	99
-CYBRB5    45   100
+CYBRB5	52	103
-CYBRC1    45   98
+CYBRC1	42	98
-CYBRC2C8  37   103
+CYBRC2C8	30	102
-CYBRC3C7  37   98
+CYBRC3C7	33	102
-CYBRC4C6  48   102
+CYBRC4C6	40	102
-CYBRC5    39   103
+CYBRC5	47	102
-CYBRD1    48   100
+CYBRD1	48	96
-CYBRD2D8  43   101
+CYBRD2D8	36	102
-CYBRD3D7  49   101
+CYBRD3D7	45	103
-CYBRD4D6  39   99
+CYBRD4D6	31	99
-CYBRD5    37   100
+CYBRD5	37	100
-CYBRE1    44   98
+CYBRE1	46	98
-CYBRE2E8  52   101
+CYBRE2E8	37	101
-CYBRE3E7  46   101
+CYBRE3E7	45	103
-CYBRE4E6  33   102
+CYBRE4E6	41	101
-CYBRE5    40   103
+CYBRE5	48	103
-CYBRF1    47   99
+CYBRF1	46	96
-CYBRF2F8  39   99
+CYBRF2F8	35	100
-CYBRF3F7  43   100
+CYBRF3F7	43	100
-CYBRF4F6  44   99
+CYBRF4F6	40	99
-CYBRF5    44   100
+CYBRF5	45	101
-CYBRG1    47   99
+CYBRG1	46	96
-CYBRG2G8  39   99
+CYBRG2G8	34	100
-CYBRG3G7  43   100
+CYBRG3G7	41	100
-CYBRG4G6  44   99
+CYBRG4G6	39	99
-CYBRG5    44   100
+CYBRG5	46	101
-CYBRH0    47   99
+CYBRH0	47	99
-CYBRI0    47   99
+CYBRI0	47	99
-CYBRJ0    44   99
+CYBRJ0	44	99
-CYBRK0    52   84
+CYBRK0	52	84
-CYBRL0    55   74
+CYBRL0	55	74
-CYBRM0    56   80
+CYBRM0	56	80
-CYBRN0    56   83
+CYBRN0	56	83
-CYBRO0    56   76
+CYBRO0	56	76
-CYBRP0    56   36
+CYBRP0	56	36
 
 HEADA1	31	61			; cacodemon
 HEADA2A8	32	61