Converted Perl build helpers to Python

png2bin.pl is replaced by tile2sam.py (external)
remove_rom.pl is replaced by remove_rom.py

remove_rom.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+import sys
+import argparse
+
+parser = argparse.ArgumentParser("Remove ROM placeholder from pacemu master disk image")
+parser.add_argument("tapfile", help="input TAP file containing ROM")
+parser.add_argument("romfile", help="start of ROM image to remove")
+parser.add_argument("romsize", type=int, help="size of ROM to remove")
+parser.add_argument("startfile", help="output file for start segment")
+parser.add_argument("endfile", help="output file for end segment")
+args = parser.parse_args()
+
+with open(args.tapfile, 'rb') as tapfile:
+    tap = tapfile.read()
+
+with open(args.romfile, 'rb') as romfile:
+    rom = romfile.read()
+
+rom_offset = tap.find(rom)
+if rom_offset == -1:
+    sys.exit("error: ROM image not found in TAP file!")
+
+start_part = tap[:rom_offset]
+end_part = tap[rom_offset + args.romsize:]
+
+with open(args.startfile, 'wb') as startfile:
+    startfile.write(start_part)
+
+with open(args.endfile, 'wb') as endfile:
+    endfile.write(end_part)