patch 8.0.1627: compiler warning for visibility attribute not supported

Problem:    Compiler warning for visibility attribute not supported on MinGW
            builds.
Solution:   Don't add the attribute when we don't expect it to work.
            (Christian Brabandt)

src/libvterm/src/vterm_internal.h

@@ -5,7 +5,7 @@
 
 #include <stdarg.h>
 
-#if defined(__GNUC__)
+#if defined(__GNUC__) && !defined(__MINGW32__)
 # define INTERNAL __attribute__((visibility("internal")))
 # define UNUSED __attribute__((unused))
 #else

src/version.c

@@ -766,6 +766,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1627,
 /**/
     1626,
 /**/