Add a "fork" of musl as //fusl.

fusl/include/langinfo.h

Index: fusl/include/langinfo.h
diff --git a/fusl/include/langinfo.h b/fusl/include/langinfo.h
new file mode 100644
index 0000000000000000000000000000000000000000..2153c42e99e13484be31c7c2db6a7a5f09571c83
--- /dev/null
+++ b/fusl/include/langinfo.h
@@ -0,0 +1,92 @@
+#ifndef _LANGINFO_H
+#define _LANGINFO_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <features.h>
+#include <nl_types.h>
+
+#define __NEED_locale_t
+
+#include <bits/alltypes.h>
+
+#define ABDAY_1 0x20000
+#define ABDAY_2 0x20001
+#define ABDAY_3 0x20002
+#define ABDAY_4 0x20003
+#define ABDAY_5 0x20004
+#define ABDAY_6 0x20005
+#define ABDAY_7 0x20006
+
+#define DAY_1 0x20007
+#define DAY_2 0x20008
+#define DAY_3 0x20009
+#define DAY_4 0x2000A
+#define DAY_5 0x2000B
+#define DAY_6 0x2000C
+#define DAY_7 0x2000D
+
+#define ABMON_1 0x2000E
+#define ABMON_2 0x2000F
+#define ABMON_3 0x20010
+#define ABMON_4 0x20011
+#define ABMON_5 0x20012
+#define ABMON_6 0x20013
+#define ABMON_7 0x20014
+#define ABMON_8 0x20015
+#define ABMON_9 0x20016
+#define ABMON_10 0x20017
+#define ABMON_11 0x20018
+#define ABMON_12 0x20019
+
+#define MON_1 0x2001A
+#define MON_2 0x2001B
+#define MON_3 0x2001C
+#define MON_4 0x2001D
+#define MON_5 0x2001E
+#define MON_6 0x2001F
+#define MON_7 0x20020
+#define MON_8 0x20021
+#define MON_9 0x20022
+#define MON_10 0x20023
+#define MON_11 0x20024
+#define MON_12 0x20025
+
+#define AM_STR 0x20026
+#define PM_STR 0x20027
+
+#define D_T_FMT 0x20028
+#define D_FMT 0x20029
+#define T_FMT 0x2002A
+#define T_FMT_AMPM 0x2002B
+
+#define ERA 0x2002C
+#define ERA_D_FMT 0x2002E
+#define ALT_DIGITS 0x2002F
+#define ERA_D_T_FMT 0x20030
+#define ERA_T_FMT 0x20031
+
+#define CODESET 14
+
+#define CRNCYSTR 0x4000F
+
+#define RADIXCHAR 0x10000
+#define THOUSEP 0x10001
+#define YESEXPR 0x50000
+#define NOEXPR 0x50001
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define YESSTR 0x50002
+#define NOSTR 0x50003
+#endif
+
+char *nl_langinfo(nl_item);
+char *nl_langinfo_l(nl_item, locale_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif