fix for issue #97: Added a modified sample to demonstrate large async GET operation. Also discovered that reply reading in async.c would stop if the reply data exceeded the buffer allocated for the read. redisAeAddRead() would not reschedule a read if already in read mode. To fix this is added redisAeForceAddRead().
added comment for code changed in commit feb6c2884a2d7f9cae95f697f792effaa32a990c
fix for issue #106: K32QueryWorkingSetEx not in kernel32.dll on Vista/Server 2008