[COMMITTED] Remove duplicate strcat implementations

diff --git a/sysdeps/ia64/strcat.c b/sysdeps/ia64/strcat.c
deleted file mode 100644
index 3bae06b..0000000
--- a/sysdeps/ia64/strcat.c
+++ /dev/null
@@ -1,26 +0,0 @@ 
-/* Copyright (C) 2004-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <string.h>
-
-char *
-strcat (char *dest, const char *src)
-{
-  strcpy (dest + strlen (dest), src);
-  return dest;
-}
-libc_hidden_builtin_def (strcat)
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcat-power7.c b/sysdeps/powerpc/powerpc64/multiarch/strcat-power7.c
index ef93a5c..22d2caa 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcat-power7.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcat-power7.c
@@ -27,4 +27,4 @@  extern typeof (strlen) __strlen_power7;
 
 #define strcpy __strcpy_power7
 #define strlen __strlen_power7
-#include <sysdeps/powerpc/strcat.c>
+#include <string/strcat.c>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcat-power8.c b/sysdeps/powerpc/powerpc64/multiarch/strcat-power8.c
index af4c2f8..d6e69b1 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcat-power8.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcat-power8.c
@@ -27,4 +27,4 @@  extern typeof (strlen) __strlen_power7;
 
 #define strcpy __strcpy_power8
 #define strlen __strlen_power7
-#include <sysdeps/powerpc/strcat.c>
+#include <string/strcat.c>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcat-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/strcat-ppc64.c
index 1bceb64..5049fc0 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcat-ppc64.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcat-ppc64.c
@@ -26,4 +26,4 @@ 
 
 extern __typeof (strcat) __strcat_ppc attribute_hidden;
 
-#include <sysdeps/powerpc/strcat.c>
+#include <string/strcat.c>
diff --git a/sysdeps/powerpc/strcat.c b/sysdeps/powerpc/strcat.c
deleted file mode 100644
index 13c64db..0000000
--- a/sysdeps/powerpc/strcat.c
+++ /dev/null
@@ -1,33 +0,0 @@ 
-/* strcat version that uses fast strcpy/strlen.
-   Copyright (C) 1997-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <string.h>
-
-#ifndef STRCAT
-# undef strcat
-# define STRCAT  strcat
-#endif
-
-/* Append SRC on the end of DEST.  */
-char *
-STRCAT(char *dest, const char *src)
-{
-  strcpy (dest + strlen (dest), src);
-  return dest;
-}
-libc_hidden_builtin_def (STRCAT)