Fix gdb.multi/base.exp testsuite regression

Regressed by:

commit 762f774785f4ef878ac4c831e1f4733dc957234d
Author: Pedro Alves <palves@redhat.com>
Date:   Thu Dec 10 16:21:06 2015 +0000
    Stop using nowarnings in gdb/testsuite/gdb.multi/

+gdb compile failed, gdb/testsuite/gdb.multi/hello.c: In function 'commonfun':
+gdb/testsuite/gdb.multi/hello.c:24:19: warning: implicit declaration of function 'bar' [-Wimplicit-function-declaration]
+ int commonfun() { bar(); } /* from hello */
+                   ^
+gdb/testsuite/gdb.multi/hello.c: At top level:
+gdb/testsuite/gdb.multi/hello.c:26:1: warning: return type defaults to 'int' [-Wimplicit-int]
+ bar()
+ ^
+gdb/testsuite/gdb.multi/hello.c:32:1: warning: return type defaults to 'int' [-Wimplicit-int]
+ hello(int x)
+ ^
+gdb/testsuite/gdb.multi/hello.c:38:1: warning: return type defaults to 'int' [-Wimplicit-int]
+ main()
+ ^
+UNTESTED: gdb.multi/base.exp: base.exp

gdb/testsuite/ChangeLog
2016-01-08  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* gdb.multi/goodbye.c: Fix compilation warnings by adding return types
	and reordering the functions.
	* gdb.multi/hangout.c: Likewise.
	* gdb.multi/hello.c: Likewise.

gdb/testsuite/ChangeLog

@@ -1,3 +1,10 @@
+2016-01-08  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	* gdb.multi/goodbye.c: Fix compilation warnings by adding return types
+	and reordering the functions.
+	* gdb.multi/hangout.c: Likewise.
+	* gdb.multi/hello.c: Likewise.
+
 2016-01-08  Simon Marchi  <simon.marchi@ericsson.com>
 
 	* gdb.perf/lib/perftest/perftest.py: Change relative imports to

gdb/testsuite/gdb.multi/goodbye.c

@@ -39,6 +39,23 @@ int verylongfun()
   glob *= 9;
 }
 
+void
+mailand()
+{
+  glob = 46;
+}
+
+int
+foo(int x) {
+  return x + 92;
+}
+
+void
+goodbye() {
+  ++glob;
+}
+
+int
 main() {
   mailand();
   foo(glob);
@@ -46,17 +63,4 @@ main() {
   goodbye();
 }
 
-foo(int x) {
-  return x + 92;
-}
-
-mailand()
-{
-  glob = 46;
-}
-
 void commonfun() { mailand(); } /* from goodbye */
-
-goodbye() {
-  ++glob;
-}

gdb/testsuite/gdb.multi/hangout.c

@@ -17,6 +17,7 @@
 
 #include <stdio.h>
 
+int
 main(int argc, char *argv[])
 {
   int i;

gdb/testsuite/gdb.multi/hello.c

@@ -21,20 +21,23 @@ short hglob = 1;
 
 short glob = 92;
 
-int commonfun() { bar(); } /* from hello */
-
+void
 bar()
 {
   if (glob == 0)
     exit(1);
 }
 
+int commonfun() { bar(); } /* from hello */
+
+int
 hello(int x)
 {
   x *= 2;
   return x + 45;
 }
 
+int
 main()
 {
   int tmpx;