ZOOKEEPER-2621: ZooKeeper doesn't start on MINGW32 (Windows)

Author: Amichai Rothman <amichai2@amichais.net>

Reviewers: phunt@apache.org

Closes #857 from amichair/ZOOKEEPER-2621

Change-Id: I876b5202de30a6fcf296756ead6843e7f59167da

bin/zkEnv.sh

@@ -128,7 +128,7 @@ CLASSPATH="$ZOOBINDIR/../build/classes:$CLASSPATH"
 CLASSPATH="$ZOOBINDIR/../zookeeper-server/target/classes:$CLASSPATH"
 
 case "`uname`" in
-    CYGWIN*) cygwin=true ;;
+    CYGWIN*|MINGW*) cygwin=true ;;
     *) cygwin=false ;;
 esac