tools: wasptool: Fix binary downloads for a specific special case

Currently if the binary file being downloaded contains single quote
characters then it gets wrapped differently by repr() so we have to add
additional cases to strip the wrapper.

Fix this the "obvious" way... where by "obvious" I mean almost anything
but.

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>

tools/wasptool

@@ -254,7 +254,15 @@ def handle_binary_download(c, tname, fname):
         while True:
             draw_pbar(100 * bytes_read / sz, verbose)
             reply = c.run_command('repr(f.read(24))')
-            data = eval(reply.replace('\\\\', '\\').strip('"'))
+            reply = reply.replace('\\\\', '\\')
+            if reply.startswith('"'):
+                # "b'..CONTENT..'"
+                reply = reply[1:-1]
+            elif reply.startswith("'"):
+                # 'b\'..CONTENT..\''
+                reply = reply[1:-1].replace("\\'", "'")
+            data = print(reply)
+            data = eval(reply)
             if len(data) == 0:
                 break
             bytes_read += len(data)