- update JmeVersion automatically in build script

- change handling of version "tag" (stable, svn etc.)

build.gradle

@@ -389,12 +389,12 @@ copyTestSources.outputs.dir "JME3TestsTemplate/src/"
 copyTestSources.outputs.dir "JME3TestsTemplateAndroid/src/"
 
 ant.properties['plugins.version'] = jmeVersion
-ant.properties['app.version']= jmeMainVersion + jmeVersionSuffix
+ant.properties['app.version']= jmeMainVersion + "-" + jmeVersionTag
 
 task buildSdk(dependsOn: [copyBaseLibs, copyProjectLibs, createProjectXml, createBaseXml, copyTestSources]) <<{
     ant.propertyfile(file: "nbproject/project.properties") {
         entry( key: "plugins.version", value: "${jmeVersion}")
-        entry( key: "app.version", value: "${jmeMainVersion + jmeVersionSuffix}")
+        entry( key: "app.version", value: "${jmeMainVersion + "-" + jmeVersionTag}")
     }
     ant.ant(dir: ".", antfile: "build.xml", target: "build")
 }