Rename <xlocale.h> back to <sys/_locale.h>

libX11 provides <X11/Xlocale.h>.  The build of libX11 itself adds
include/X11 to the compiler's include path.  This results in a name
collision with /usr/include/xlocale.h on case-insensitive filesystems.

Commit 90e35b1eb3df renamed sys/_locale.h to xlocale.h in March 2017 under
the assumption that we should provide the locale_t type in the same file
as on Linux, FreeBSD, and Darwin.

A few weeks later (June 2017), glibc removed the xlocale.h file in favor
of bits/types/locale_t.h, which shouldn't be included directly anyway.

For reference and the reasoning, see
https://sourceware.org/git/?p=glibc.git;a=commit;h=f0be25b6336d

Given the above, revert 90e35b1eb3df4070e68afc5e7060665214d586be and
fix additional usage of xlocale.h.

11 files changed, 13 insertions, 13 deletions

diff --git a/newlib/libc/include/ctype.h b/newlib/libc/include/ctype.h
index 1cee695..a0009af 100644
--- a/newlib/libc/include/ctype.h
+++ b/newlib/libc/include/ctype.h
@@ -5,7 +5,7 @@
 #include <sys/cdefs.h>
 
 #if __POSIX_VISIBLE >= 200809 || __MISC_VISIBLE || defined (_COMPILING_NEWLIB)
-#include <xlocale.h>
+#include <sys/_locale.h>
 #endif
 
 _BEGIN_STD_C
diff --git a/newlib/libc/include/inttypes.h b/newlib/libc/include/inttypes.h
index 694ba8f..0732154 100644
--- a/newlib/libc/include/inttypes.h
+++ b/newlib/libc/include/inttypes.h
@@ -22,7 +22,7 @@
 #include <stddef.h>
 
 #if __BSD_VISIBLE
-#include <xlocale.h>
+#include <sys/_locale.h>
 #endif
 
 #define __STRINGIFY(a) #a
diff --git a/newlib/libc/include/langinfo.h b/newlib/libc/include/langinfo.h
index d2b7a03..fcf986c 100644
--- a/newlib/libc/include/langinfo.h
+++ b/newlib/libc/include/langinfo.h
@@ -32,7 +32,7 @@
 #include <sys/cdefs.h>
 #include <sys/_types.h>
 #if __POSIX_VISIBLE >= 200809
-#include <xlocale.h>
+#include <sys/_locale.h>
 #endif
 
 #ifndef _NL_ITEM_DECLARED
diff --git a/newlib/libc/include/locale.h b/newlib/libc/include/locale.h
index d11eb00..8abb8db 100644
--- a/newlib/libc/include/locale.h
+++ b/newlib/libc/include/locale.h
@@ -23,7 +23,7 @@
 
 #if __POSIX_VISIBLE >= 200809 || defined (_COMPILING_NEWLIB)
 
-#include <xlocale.h>
+#include <sys/_locale.h>
 
 #define LC_ALL_MASK		(1 << LC_ALL)
 #define LC_COLLATE_MASK		(1 << LC_COLLATE)
diff --git a/newlib/libc/include/stdlib.h b/newlib/libc/include/stdlib.h
index 933d181..15b3494 100644
--- a/newlib/libc/include/stdlib.h
+++ b/newlib/libc/include/stdlib.h
@@ -27,7 +27,7 @@
 #endif
 
 #if __GNU_VISIBLE
-#include <xlocale.h>
+#include <sys/_locale.h>
 #endif
 
 _BEGIN_STD_C
diff --git a/newlib/libc/include/string.h b/newlib/libc/include/string.h
index 04c4d18..60e837b 100644
--- a/newlib/libc/include/string.h
+++ b/newlib/libc/include/string.h
@@ -17,7 +17,7 @@
 #include <stddef.h>
 
 #if __POSIX_VISIBLE >= 200809
-#include <xlocale.h>
+#include <sys/_locale.h>
 #endif
 
 #if __BSD_VISIBLE
diff --git a/newlib/libc/include/strings.h b/newlib/libc/include/strings.h
index 7e2e557..f0f7ee1 100644
--- a/newlib/libc/include/strings.h
+++ b/newlib/libc/include/strings.h
@@ -33,7 +33,7 @@
 #include <sys/_types.h>
 
 #if __POSIX_VISIBLE >= 200809
-#include <xlocale.h>
+#include <sys/_locale.h>
 #endif
 
 #ifndef _SIZE_T_DECLARED
diff --git a/newlib/libc/include/xlocale.h b/newlib/libc/include/sys/_locale.h
index f955426..ce6f995 100644
--- a/newlib/libc/include/xlocale.h
+++ b/newlib/libc/include/sys/_locale.h
@@ -1,7 +1,7 @@
 /* Definition of opaque POSIX-1.2008 type locale_t for userspace. */
 
-#ifndef	_XLOCALE_H
-#define _XLOCALE_H
+#ifndef	_SYS__LOCALE_H
+#define _SYS__LOCALE_H
 
 #include <newlib.h>
 #include <sys/config.h>
@@ -9,4 +9,4 @@
 struct __locale_t;
 typedef struct __locale_t *locale_t;
 
-#endif	/* _XLOCALE_H */
+#endif	/* _SYS__LOCALE_H */
diff --git a/newlib/libc/include/time.h b/newlib/libc/include/time.h
index d69d199..3031590 100644
--- a/newlib/libc/include/time.h
+++ b/newlib/libc/include/time.h
@@ -29,7 +29,7 @@
 #include <sys/timespec.h>
 
 #if __POSIX_VISIBLE >= 200809
-#include <xlocale.h>
+#include <sys/_locale.h>
 #endif
 
 _BEGIN_STD_C
diff --git a/newlib/libc/include/wchar.h b/newlib/libc/include/wchar.h
index 9f2441c..c04a651 100644
--- a/newlib/libc/include/wchar.h
+++ b/newlib/libc/include/wchar.h
@@ -64,7 +64,7 @@ typedef __gnuc_va_list va_list;
 #endif
 
 #if __POSIX_VISIBLE >= 200809
-#include <xlocale.h>
+#include <sys/_locale.h>
 #endif
 
 _BEGIN_STD_C
diff --git a/newlib/libc/include/wctype.h b/newlib/libc/include/wctype.h
index 9b71090..e5452bf 100644
--- a/newlib/libc/include/wctype.h
+++ b/newlib/libc/include/wctype.h
@@ -8,7 +8,7 @@
 #include <stddef.h>
 
 #if __POSIX_VISIBLE >= 200809
-#include <xlocale.h>
+#include <sys/_locale.h>
 #endif
 
 #ifndef WEOF