Drop now redundant bundled copies of stpcpy() and stpncpy()

stpcpy() and stpncpy() got added to POSIX-1.2008 (surprisingly if you
ask me), and as that's the version we require now since commit
96ec957, we don't need to carry this
dusty stuff (only touched once since -98...)

configure.ac

@@ -602,15 +602,13 @@ AC_LINK_IFELSE([AC_LANG_PROGRAM([extern const char *__progname;],
 	   AC_MSG_RESULT([yes]),
 	   AC_MSG_RESULT([no]))
 
-AC_REPLACE_FUNCS(stpcpy stpncpy)
-
 AC_CHECK_FUNCS([secure_getenv __secure_getenv])
 
 AC_CHECK_FUNCS(
    [mkstemp getcwd basename dirname realpath setenv unsetenv regcomp lchown \
     utimes getline localtime_r statvfs getaddrinfo \
     openat mkdirat fstatat linkat symlinkat mkfifoat mknodat unlinkat \
-    renameat utimensat fchmodat fchownat ],
+    renameat utimensat fchmodat fchownat stpcpy stpncpy ],
    [], [AC_MSG_ERROR([function required by rpm])])
 
 dnl check if python is requested

misc/Makefile.am

@@ -3,9 +3,6 @@
 AM_CPPFLAGS = -I$(top_builddir) -I$(top_srcdir) -I$(top_srcdir)/include
 AM_CPPFLAGS += -I$(top_srcdir)/misc
 
-EXTRA_DIST = \
-	stpcpy.c	stpncpy.c
-
 noinst_LTLIBRARIES = libmisc.la
 
 libmisc_la_SOURCES = fts.c rpmfts.h

system.h

@@ -29,14 +29,6 @@ extern char ** environ;
 #endif
 #endif
 
-#if !defined(HAVE_STPCPY)
-char * stpcpy(char * dest, const char * src);
-#endif
-
-#if !defined(HAVE_STPNCPY)
-char * stpncpy(char * dest, const char * src, size_t n);
-#endif
-
 #if HAVE_SECURE_GETENV
 #define	getenv(_s)	secure_getenv(_s)
 #elif HAVE___SECURE_GETENV