Fix for value being boolean in set().

ChangeLog

@@ -1,3 +1,10 @@
+Fri, 31 Jul 2015 11:38:25 -0600  Sean Reifschneider  <[email protected]>
+
+   *  1.57 release.
+
+   * Fix for #75 and #76, mc.set(key, False) results in "ValueError:
+     invalid literal for int()".  Reported by Carlos Sanchez on github.
+
 Sun, 26 Jul 2015 14:44:20 -0600  Sean Reifschneider  <[email protected]>
 
    *  1.56 release.

memcache.py

@@ -90,7 +90,7 @@ def useOldServerHashFunction():
 
 #  Original author: Evan Martin of Danga Interactive
 __author__ = "Sean Reifschneider <[email protected]>"
-__version__ = "1.56"
+__version__ = "1.57"
 __copyright__ = "Copyright (C) 2003 Danga Interactive"
 #  http://en.wikipedia.org/wiki/Python_Software_Foundation_License
 __license__ = "Python Software Foundation License"
@@ -934,7 +934,7 @@ def _val_to_store_info(self, val, min_compress_len):
             val = val.encode('utf-8')
         elif isinstance(val, int):
             flags |= Client._FLAG_INTEGER
-            val = str(val)
+            val = '%d' % val
             if six.PY3:
                 val = val.encode('ascii')
             # force no attempt to compress this silly string.