Minor fixes.

* libmu_auth/ldap.c: Include mailutils/cstr.h.
* libmu_auth/sql.c:  Likewise.
* mimeview/mimetypes.y: Use mu_tolower, instead of tolower.

@@ -24,6 +24,7 @@
 #include <ctype.h>
 
 #include <mailutils/mu_auth.h>
+#include <mailutils/cstr.h>
 
 #ifdef WITH_LDAP
 #include "mailutils/argcv.h"

@@ -44,7 +44,6 @@
 #include <mailutils/list.h>
 #include <mailutils/iterator.h>
 #include <mailutils/mailbox.h>
-#include <mailutils/sql.h>
 #include <mailutils/mu_auth.h>
 #include <mailutils/error.h>
 #include <mailutils/errno.h>
@@ -52,6 +51,7 @@
 #include <mailutils/mutil.h>
 #include <mailutils/sql.h>
 #include <mailutils/vartab.h>
+#include <mailutils/cstr.h>
 #include "sql.h"
 
 #ifdef USE_SQL

@@ -392,7 +392,7 @@ b_istring (union argument *args)
   for (i = 0; i < str->len; i++)
     {
       int c = getc (mimeview_fp);
-      if (c == EOF || tolower (c) != tolower (str->ptr[i]))
+      if (c == EOF || mu_tolower (c) != mu_tolower (str->ptr[i]))
 	return 0;
     }
   return 1;