Problem: xxd: MSVC warning about non-ASCII character
Solution: Specify source-charset:utf-8 in Makefile (Ken Takata)
xxd.c has non-ASCII-character comments. This causes the following
warning on MSVC:
```
warning C4819: The file contains a character that cannot be represented
in the current code page (932). Save the file in Unicode format to
prevent data loss.
```
Add the `/source-charset:utf-8` option to avoid this.
closes: #15119
Signed-off-by: Ken Takata <kentkt@csc.jp>
Signed-off-by: Christian Brabandt <cb@256bit.org>
static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 530,
/**/
529,
/**/
xxd: xxd.exe
xxd.exe: xxd.c
- cl /nologo -DWIN32 xxd.c -link -subsystem:$(SUBSYSTEM)
+ cl /nologo /source-charset:utf-8 -DWIN32 xxd.c -link -subsystem:$(SUBSYSTEM)
# This was for an older compiler
# cl /nologo -DWIN32 xxd.c /link setargv.obj