* bootstrap: Import improvements from latest gnulib.

(cherry picked from commit 73edad9a25)

Conflicts:

	bootstrap

lib/.cvsignore

@@ -1,6 +1,7 @@
 .deps
 Makefile
 Makefile.in
+alloca.h
 alloca.in.h
 argmatch.c
 argmatch.h
@@ -23,15 +24,18 @@ dirname.c
 dirname.h
 dup-safer.c
 dup2.c
+errno.h
 errno.in.h
 error.c
 error.h
 exitfail.c
 exitfail.h
 fcntl.c
+fcntl.h
 fcntl.in.h
 fd-safer.c
 float+.h
+float.h
 float.in.h
 fopen-safer.c
 fopen.c
@@ -66,6 +70,7 @@ isnanl.c
 localcharset.c
 localcharset.h
 malloc.c
+math.h
 math.in.h
 mbrtowc.c
 mbsinit.c
@@ -104,6 +109,7 @@ stamp-h1
 stdbool.h
 stdbool.in.h
 stdbool_.h
+stddef.h
 stddef.in.h
 stdint.h
 stdint.in.h
@@ -112,6 +118,7 @@ stdio--.h
 stdio-impl.h
 stdio-safer.h
 stdio-write.c
+stdio.h
 stdio.in.h
 stdlib.h
 stdlib.in.h