Sync top-level change from gdb

This patch syncs a change to the top-level configury from gdb.  It
should not affect the gcc build at all.  Tested by rebuilding.

ChangeLog
2019-06-15  Tom Tromey  <[email protected]>

	* configure.ac (host_libs): Add gnulib.
	* configure: Rebuild.
	* Makefile.def (host_modules, dependencies): Add gnulib.
	* Makefile.in: Rebuild.

From-SVN: r272332

ChangeLog

@@ -1,3 +1,10 @@
+2019-06-15  Tom Tromey  <[email protected]>
+
+	* configure.ac (host_libs): Add gnulib.
+	* configure: Rebuild.
+	* Makefile.def (host_modules, dependencies): Add gnulib.
+	* Makefile.in: Rebuild.
+
 2019-06-12  Dimitar Dimitrov  <[email protected]>
 
 	* MAINTAINERS (Write After Approval): Add myself.

Makefile.def

@@ -112,6 +112,7 @@ host_modules= { module= texinfo; no_install= true; };
 host_modules= { module= zlib; no_install=true; no_check=true;
 		bootstrap=true;
 	        extra_configure_flags='@extra_host_zlib_configure_flags@';};
+host_modules= { module= gnulib; };
 host_modules= { module= gdb; };
 host_modules= { module= expect; };
 host_modules= { module= guile; };
@@ -392,11 +393,13 @@ dependencies = { module=all-intl; on=all-libiconv; };
 dependencies = { module=configure-gdb; on=all-intl; };
 dependencies = { module=configure-gdb; on=configure-sim; };
 dependencies = { module=configure-gdb; on=all-bfd; };
+dependencies = { module=configure-gdb; on=all-gnulib; };
 // Depend on all-libiconv so that configure checks for iconv
 // functions will work.
 dependencies = { module=configure-gdb; on=all-libiconv; };
 dependencies = { module=all-gdb; on=all-libiberty; };
 dependencies = { module=all-gdb; on=all-libiconv; };
+dependencies = { module=all-gdb; on=all-gnulib; };
 dependencies = { module=all-gdb; on=all-opcodes; };
 dependencies = { module=all-gdb; on=all-readline; };
 dependencies = { module=all-gdb; on=all-build-bison; };