All functions made static.

@@ -41,7 +41,7 @@
 #include <mailutils/mu_auth.h>
 
 /* System database */
-int
+static int
 mu_auth_system (void *return_data, struct passwd *pw)
 {
   char *mailbox_name;
@@ -83,7 +83,7 @@ mu_auth_system_by_name (void *return_data, void *key,
   return mu_auth_system (return_data, getpwnam (key));
 }
 
-int
+static int
 mu_auth_system_by_uid (void *return_data, void *key,
 		       void *unused_func_data, void *unused_call_data)
 {
@@ -95,7 +95,7 @@ mu_auth_system_by_uid (void *return_data, void *key,
   return mu_auth_system (return_data, getpwuid (*(uid_t*) key));
 }
 
-int
+static int
 mu_authenticate_generic (void *ignored_return_data,
 			 void *key,
 			 void *ignored_func_data,
@@ -110,7 +110,7 @@ mu_authenticate_generic (void *ignored_return_data,
 }
 
 /* Called only if generic fails */
-int
+static int
 mu_authenticate_system (void *ignored_return_data,
 			void *key,
 			void *ignored_func_data,

@@ -47,7 +47,7 @@
 #include <mailutils/mu_auth.h>
 
 #ifdef USE_VIRTUAL_DOMAINS
-struct passwd *
+static struct passwd *
 getpwnam_virtual (char *u)
 {
   struct passwd *pw = NULL;
@@ -85,7 +85,7 @@ getpwnam_virtual (char *u)
   return pw;
 }
 
-struct passwd *
+static struct passwd *
 getpwnam_ip_virtual (const char *u)
 {
   struct sockaddr_in addr;
@@ -128,7 +128,7 @@ getpwnam_ip_virtual (const char *u)
 }
 
 /* Virtual domains */
-int
+static int
 mu_auth_virt_domain_by_name (void *return_data, void *key,
 			     void *unused_func_data, void *unused_call_data)
 {
@@ -167,7 +167,7 @@ mu_auth_virt_domain_by_name (void *return_data, void *key,
   return rc;
 }
 #else
-int
+static int
 mu_auth_virt_domain_by_name (void *return_data, void *key,
 			     void *unused_func_data, void *unused_call_data)
 {