nall: ensure utf-8 string encoding in cl builds (#1339)

As a bonus, use the Unicode ellipsis character in the ares UI on all
platforms instead of just macOS. In addition to looking nicer, it will
make regressions in this area very obvious.

desktop-ui/presentation/presentation.cpp

@@ -2,11 +2,7 @@
 namespace Instances { Instance<Presentation> presentation; }
 Presentation& presentation = Instances::presentation();
 
-#if defined(PLATFORM_MACOS)
 #define ELLIPSIS "\u2026"
-#else
-#define ELLIPSIS " ..."
-#endif
 
 Presentation::Presentation() {
   loadMenu.setText("Load");

desktop-ui/settings/paths.cpp

@@ -1,8 +1,4 @@
-#if defined(PLATFORM_MACOS)
 #define ELLIPSIS "\u2026"
-#else
-#define ELLIPSIS " ..."
-#endif
 
 auto PathSettings::construct() -> void {
   setCollapsible();

nall/GNUmakefile

@@ -119,7 +119,7 @@ endif
 ifeq ($(cl),true)
   flags.c      = -TC -std:c11
   flags.cpp    = -TP -std:c++17 -EHsc
-  flags       += -nologo -permissive- -W2 -Fd$(object.path)/
+  flags       += -nologo -permissive- -utf-8 -W2 -Fd$(object.path)/
   options     += -nologo $(if $(findstring clang,$(compiler)),-fuse-ld=lld) -link
 else
   flags.c      = -x c -std=c11