vim-patch:8.2.0271: the "num64" feature is available everywhere

Problem:    The "num64" feature is available everywhere and building without
            it causes problems.
Solution:   Graduage the "num64" feature. (James McCoy, closes vim/vim#5650)
82f654e092

Restore Test_printf_spec_b() from patch 7.4.2221..

N/A patches for version.c:

vim-patch:8.2.0594: MS-Windows: cannot build with WINVER set to 0x0501

Problem:    MS-Windows: cannot build with WINVER set to 0x0501.
Solution:   Only use inet_ntop() when available. (Ozaki Kiichi, closes vim/vim#5946)
b6fb0516ec

vim-patch:8.2.0965: has_funcundefined() is not used

Problem:    Has_funcundefined() is not used.
Solution:   Delete the function. (Dominique Pellé, closes vim/vim#6242)
5055c56cfb

vim-patch:8.2.1370: MS-Windows: warning for using fstat() with stat_T

Problem:    MS-Windows: warning for using fstat() with stat_T.
Solution:   use _fstat64() if available. (Naruhiko Nishino, closes vim/vim#6625)
c753478b82

vim-patch:8.2.2056: configure fails when building with implicit-function-declaration

Problem:    Configure fails when building with the
            "implicit-function-declaration" error enabled, specifically on Mac.
Solution:   Declear the functions like in the source code. (suggestion by
            Clemens Lang, closes vim/vim#7380)
ce7be3a0e6

src/nvim/strings.c

@@ -900,6 +900,7 @@ int vim_vsnprintf_typval(
       }
 
       switch (fmt_spec) {
+        case 'b': case 'B':
         case 'd': case 'u': case 'o': case 'x': case 'X':
           if (tvs && length_modifier == '\0') {
             length_modifier = '2';