[Maintenance] Rename the EGC implementation files a bit

Part of P0121, funded by Yanga.

th01/end/pic.cpp

@@ -10,7 +10,7 @@ void pascal end_pics_load_palette_show(const char *fn)
 
 // Avoid symbol duplication...
 #define egc_start_copy egc_start_copy_1
-#include "th01/hardware/egcscopy.c"
+#include "th01/hardware/egcstart.c"
 
 static const pixel_t PIC_W = (RES_X / 2);
 static const pixel_t PIC_H = (RES_Y / 2);

th01/fuuin_11.cpp

@@ -7,5 +7,5 @@ extern "C" {
 #include "th01/th01.h"
 
 #include "th01/hardware/vplanset.c"
-#include "th01/hardware/egccopyr.cpp"
+#include "th01/hardware/egcrect.cpp"
 }

th01/hardware/egcrect.cpp

@@ -1,4 +1,4 @@
-#include "th01/hardware/egcscopy.c"
+#include "th01/hardware/egcstart.c"
 
 void egc_copy_rect_1_to_0_16(screen_x_t x, vram_y_t y, pixel_t w, pixel_t h)
 {

th01/main_07.cpp

@@ -11,6 +11,6 @@ extern "C" {
 
 #include "th01/formats/ptn_0to1.cpp"
 #include "th01/hardware/vplanset.c"
-#include "th01/hardware/egccopyr.cpp"
+#include "th01/hardware/egcrect.cpp"
 #include "th01/formats/ptn_snap.cpp"
 }

th01/op_07.cpp

@@ -11,6 +11,6 @@ extern "C" {
 
 #include "th01/formats/ptn_0to1.cpp"
 #include "th01/hardware/vplanset.c"
-#include "th01/hardware/egccopyr.cpp"
+#include "th01/hardware/egcrect.cpp"
 #include "th01/formats/ptn_snap.cpp"
 }

th02/maine_05.cpp

@@ -29,7 +29,7 @@ void pascal near rotrect_draw(int rad, unsigned char angle)
 }
 
 #define graph_accesspage_func graph_accesspage
-#include "th01/hardware/egccopyr.cpp"
+#include "th01/hardware/egcrect.cpp"
 
 void pascal rotrect_animate(char rot_speed, char start_angle)
 {