Variety of build updates

- Update target platform and SDK version to 2018-12
    - ICP support will require this version
- Remove unused 'prereqs' ant code
- gitignore build files
- Fix 'clean' task to properly delete tools.image
    - previously, multiple builds in a row could result in duplicated plugins in the updatesite
- Separate deleting large Eclipse downloads into a different non-default clean task
- Always create a new build label file so the timestamp is current
-

Author: Tim Etchells

.gitignore

@@ -1 +1,2 @@
 .DS_STORE
+**/runtime-New_configuration/

README.md

@@ -45,6 +45,15 @@ For more information see the [documentation](https://microclimate-dev2ops.github
 
 We welcome [issues](https://github.com/microclimate-dev2ops/microclimate-eclipse-tools/issues) and contributions. For more information, see [CONTRIBUTING.md](https://github.com/microclimate-dev2ops/microclimate-eclipse-tools/tree/master/CONTRIBUTING.md).
 
+### Enabling Debug Logs
+
+1. Create a file called `.options` in your Eclipse install directory (the same directory with the `eclipse` executable) with the following content:
+
+`com.ibm.microclimate.core/debug/info=true`
+
+2. Launch eclipse with the `-debug` flag.
+3. The logs are written to the Eclipse workspace directory, to `.metadata/.log`.
+
 ## Building
 
 1. Clone the repository to your system.
@@ -80,4 +89,3 @@ We welcome [issues](https://github.com/microclimate-dev2ops/microclimate-eclipse
 | [json-20090211.jar](https://mvnrepository.com/artifact/org.json/json/20090211) | [The JSON License](http://www.json.org/license.html) |
 | [okhttp-3.8.1.jar](https://mvnrepository.com/artifact/com.squareup.okhttp3/okhttp/3.8.1) | [Apache 2.0](http://www.apache.org/licenses/LICENSE-2.0.txt) |
 | [okio-1.13.0.jar](https://mvnrepository.com/artifact/com.squareup.okio/okio/1.13.0) | [Apache 2.0](http://www.apache.org/licenses/LICENSE-2.0.txt) |
-

dev/.gitignore

@@ -0,0 +1,8 @@
+.metadata/
+.gradle/
+target_platform/
+tools.image/
+**/tools.pii.package
+com.ibm.microclimate*/**/build/
+ant_build/buildLabel.properties
+ant_build/target_platform.tar.gz

dev/.project

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>dev</name>
+	<comment>Project dev created by Buildship.</comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
+	</natures>
+</projectDescription>

dev/ant_build/build-mdt.xml

@@ -23,18 +23,18 @@
     <import file="${mdt_build.basedir}/resources/build_imports/liberty-all.xml" />
     <import file="${mdt_build.basedir}/mdt_imports.xml"/>
     <import file="${mdt_build.basedir}/mdt_test_imports.xml"/>
-    <import file="${mdt_build.basedir}/prereqs/prereqs.xml" />
 
      <target name="getMDTBuildLabel" depends="createBuildLabelFile">
           <loadproperties srcFile="${mdt_build.basedir}/buildLabel.properties"/>
           <echo>Build label is "${buildLabel}"</echo>
      </target>
 
-    <target name="checkBuildLabelFile" >
+    <!--target name="checkBuildLabelFile" >
         <available file="${mdt_build.basedir}/buildLabel.properties" property="buildLabel.present"/>
-    </target>
+    </target-->
 
-    <target name="createBuildLabelFile" depends="checkBuildLabelFile" unless="buildLabel.present">
+    <!--target name="createBuildLabelFile" depends="checkBuildLabelFile" unless="buildLabel.present"-->
+    <target name="createBuildLabelFile">
         <tstamp>
               <format property="buildLabel" pattern="yyyyMMdd_HHmm" timezone="UTC"/>
         </tstamp>
@@ -44,7 +44,7 @@
         </propertyfile>
     </target>
 
-    <target name="compile" depends="getMDTBuildLabel, preparePrereqsIvy" unless="${env.skip_compile_mdt}">
+    <target name="compile" depends="getMDTBuildLabel" unless="${env.skip_compile_mdt}">
         <echo message="Build label is ${buildLabel}"/>
         <antcall target="liberty-all.compile" />
         <echo message="mdt_imports.generateMDTSuppliersUpdateSite call"/>