Update to latest Gradle 5.6 to allow to build with newer Java versions

Adjust build.gradle slightly to work with new version of Gradle

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1868983 13f79535-47bb-0310-9956-ffa450edef68

build.gradle

@@ -52,7 +52,20 @@ ant.taskdef(name: "junit",
         classname: "org.apache.tools.ant.taskdefs.optional.junit.JUnitTask",
         classpath: configurations.antLibs.asPath)
 
-ant.importBuild 'build.xml'
+wrapper {
+	gradleVersion = '5.6'
+}
+
+task adjustWrapperPropertiesFile {
+	doLast {
+		ant.replaceregexp(match:'^#.*', replace:'', flags:'g', byline:true) {
+			fileset(dir: project.projectDir, includes: 'gradle/wrapper/gradle-wrapper.properties')
+		}
+		new File(project.projectDir, 'gradle/wrapper/gradle-wrapper.properties').with { it.text = it.readLines().findAll { it }.sort().join('\n') }
+		ant.fixcrlf(file: 'gradle/wrapper/gradle-wrapper.properties', eol: 'lf')
+	}
+}
+wrapper.finalizedBy adjustWrapperPropertiesFile
 
 /**
 
@@ -61,21 +74,6 @@ Define properties for all projects, including this one
 */
 allprojects {
     apply plugin: 'eclipse'
-
-    task wrapper(type: Wrapper) {
-        gradleVersion = '4.10.3'
-    }
-
-    task adjustWrapperPropertiesFile {
-        doLast {
-            ant.replaceregexp(match:'^#.*', replace:'', flags:'g', byline:true) {
-                fileset(dir: project.projectDir, includes: 'gradle/wrapper/gradle-wrapper.properties')
-            }
-            new File(project.projectDir, 'gradle/wrapper/gradle-wrapper.properties').with { it.text = it.readLines().findAll { it }.sort().join('\n') }
-            ant.fixcrlf(file: 'gradle/wrapper/gradle-wrapper.properties', eol: 'lf')
-        }
-    }
-    wrapper.finalizedBy adjustWrapperPropertiesFile
 }
 
 /**

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.5.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -1,5 +1,21 @@
 #!/usr/bin/env sh
 
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 ##############################################################################
 ##
 ##  Gradle start up script for UN*X
@@ -28,16 +44,16 @@ APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -155,7 +171,7 @@ if $cygwin ; then
 fi
 
 # Escape application args
-save ( ) {
+save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }

gradlew.bat

@@ -1,3 +1,19 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
 @if "%DEBUG%" == "" @echo off
 @rem ##########################################################################
 @rem
@@ -14,7 +30,7 @@ set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
 
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome