Revert "Update to Gradle 4.1"

This reverts commit a54c18e52ed0e37b2e808249c61c1329d39dd517.

gradle/wrapper/gradle-wrapper.properties

-#Sat Sep 09 18:32:27 EDT 2017
+#Fri Jul 07 18:07:45 EDT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.0.1-bin.zip

gradlew

 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn () {
+warn ( ) {
     echo "$*"
 }
 
-die () {
+die ( ) {
     echo
     echo "$*"
     echo
 fi
 
 # Escape application args
-save () {
+save ( ) {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }