Adjust to current gnulib and modules used.

Add getdelim.c, getdelim.h, mbchar.c, mbchar.h, mbuiter.h, memchr.c,
pipe-safer.c, size_max.h, strdup.c, strdup.h, strnlen.h, strnlen1.c,
strnlen1.h, unistd--.h.
Remove getndelim2.c, getndelim2.h, pathmax.h, sysexits.h, xstrdup.c.

lib/.cvsignore

@@ -56,10 +56,10 @@ getcwd.h
 getdate.c
 getdate.h
 getdate.y
+getdelim.c
+getdelim.h
 getline.c
 getline.h
-getndelim2.c
-getndelim2.h
 getopt.c
 getopt.h
 getopt1.c
@@ -82,6 +82,10 @@ lchown.h
 localcharset.c
 localcharset.h
 localedir.h
+mbchar.c
+mbchar.h
+mbuiter.h
+memchr.c
 mempcpy.c
 mempcpy.h
 memrchr.c
@@ -96,11 +100,11 @@ obstack.h
 offtostr.c
 openat.c
 openat.h
-pathmax.h
 paxerror.c
 paxexit.c
 paxlib.h
 paxnames.c
+pipe-safer.c
 printf-args.c
 printf-args.h
 printf-parse.c
@@ -126,6 +130,7 @@ savedir.c
 savedir.h
 setenv.c
 setenv.h
+size_max.h
 stat-macros.h
 stdbool.h
 stdbool_.h
@@ -135,11 +140,16 @@ strcase.h
 strcasecmp.c
 strchrnul.c
 strchrnul.h
+strdup.c
+strdup.h
 stripslash.c
 strncasecmp.c
 strndup.c
 strndup.h
 strnlen.c
+strnlen.h
+strnlen1.c
+strnlen1.h
 strtoimax.c
 strtol.c
 strtoll.c
@@ -147,12 +157,12 @@ strtoul.c
 strtoull.c
 strtoumax.c
 sysexit_.h
-sysexits.h
 system.h
 time_r.c
 time_r.h
 timespec.h
 umaxtostr.c
+unistd--.h
 unistd-safer.h
 unlinkdir.c
 unlinkdir.h
@@ -171,7 +181,6 @@ xgetcwd.c
 xgetcwd.h
 xmalloc.c
 xsize.h
-xstrdup.c
 xstrtol.c
 xstrtol.h
 xstrtoul.c