Merge branch 'cassandra-3.0' into cassandra-3.9

conf/cassandra-env.ps1

@@ -327,6 +327,7 @@ Function SetCassandraEnvironment
     # times. If in doubt, and if you do not particularly want to tweak, go
     # 100 MB per physical CPU core.
 
+    New-Item -Force -ItemType directory -Path $env:CASSANDRA_HOME/logs/
     #GC log path has to be defined here since it needs to find CASSANDRA_HOME
     $env:JVM_OPTS="$env:JVM_OPTS -Xloggc:""$env:CASSANDRA_HOME/logs/gc.log"""
 

conf/cassandra-env.sh

@@ -121,6 +121,7 @@ case "$jvm" in
         ;;
 esac
 
+mkdir -p ${CASSANDRA_HOME}/logs/
 #GC log path has to be defined here because it needs to access CASSANDRA_HOME
 JVM_OPTS="$JVM_OPTS -Xloggc:${CASSANDRA_HOME}/logs/gc.log"