[pangomm] NMake Makefiles: Use the /utf-8 compiler flag

[Chun-wei Fan <fanchunwei src gnome org>]

commit 5c5903a731260fa8dd18f1762ca830817e75c9e4
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Tue Jun 30 15:32:57 2020 +0800

    NMake Makefiles: Use the /utf-8 compiler flag
    
    This makes it easier to build pangomm on non-Western locales, without requiring
    to change the "Locale settings for non-Unicode programs" to English, which will
    require a restart, since warning (error) C4819 can be otherwise triggered, which
    can indicate broken builds due to Unicode handling issues in the compiler.

 MSVC_NMake/config-msvc.mak | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/MSVC_NMake/config-msvc.mak b/MSVC_NMake/config-msvc.mak
index c535894..7724d71 100644
--- a/MSVC_NMake/config-msvc.mak
+++ b/MSVC_NMake/config-msvc.mak
@@ -32,7 +32,7 @@ PANGOMM_BASE_CFLAGS =                 \
        /Ivs$(VSVER)\$(CFG)\$(PLAT)     \
        /I..\untracked\pango /I..\untracked\pango\pangomm               \
        /I..\pango /I..\pango\pangomm /I.\pangomm               \
-       /wd4530 /wd4251 /wd4275 /std:c++17      \
+       /wd4530 /wd4251 /wd4275 /std:c++17 /utf-8       \
        /FImsvc_recommended_pragmas.h
 
 PANGOMM_EXTRA_INCLUDES =       \