Convert mail to mu_cli

@@ -25,7 +25,7 @@ mailbindir=@MAILBINDIR@
 mailbin_PROGRAMS = mail
 
 mail_LDADD = \
- ${MU_APP_LIBRARIES}\
+ ${MU_APP_NEW_LIBRARIES}\
  ${MU_LIB_MBOX}\
  ${MU_LIB_IMAP}\
  ${MU_LIB_POP}\

@@ -256,8 +256,8 @@ extern int mail_header_is_unfoldable (const char *str);
 extern int mail_mbox_close (void);
 extern char *mail_expand_name (const char *name);
 
-extern void send_append_header (char *text);
-extern void send_append_header2 (char *name, char *value, int mode);
+extern void send_append_header (char const *text);
+extern void send_append_header2 (char const *name, char const *value, int mode);
 extern int send_attach_file_default (const char *name);
 
 extern int escape_check_args (int argc, char **argv, int minargs, int maxargs);

@@ -81,7 +81,7 @@ add_header (char *name, char *value, int mode)
 }
 
 void
-send_append_header (char *text)
+send_append_header (char const *text)
 {
   char *p;
   size_t len;
@@ -104,7 +104,7 @@ send_append_header (char *text)
 }
 
 void
-send_append_header2 (char *name, char *value, int mode)
+send_append_header2 (char const *name, char const *value, int mode)
 {
   add_header (mu_strdup (name), mu_strdup (value), mode);
 }