build: fix build errors

build.gradle

@@ -65,7 +65,7 @@ task libDist(dependsOn: subprojects.build) << {
 }
 
 task createZipDistribution(type:Zip,dependsOn:["dist","libDist"], description:"Package the nightly zip distribution"){
-    archiveName "jME" + releaseInfo.fullVersion + ".zip"
+    archiveName "jME" + jmeFullVersion + ".zip"
     into("/") {
          from {"./dist"}
     }            

common.gradle

@@ -33,7 +33,7 @@ dependencies {
 jar {
     manifest {
         attributes 'Implementation-Title': 'jMonkeyEngine',
-                   'Implementation-Version': releaseInfo.fullVersion
+                   'Implementation-Version': jmeFullVersion
     }
 }
 

version.gradle

@@ -39,12 +39,21 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'org.ajoberstar:gradle-git:1.4.1'
+        classpath 'org.ajoberstar:gradle-git:1.2.0'
     }
 }
 
 ext {
-    releaseInfo = null;
+    jmeRevision     = 0
+    jmeNbmRevision  = 0
+    jmeGitHash      = ""
+    jmeGitTag       = ""
+    jmeShortGitHash = ""
+    jmeBuildDate    = new SimpleDateFormat("yyyy-MM-dd").format(new Date())
+    jmeBranchName   = "unknown"
+    jmeFullVersion  = "${jmeVersion}-UNKNOWN"
+    jmePomVersion   = "unknown"
+    jmeNbmUcSuffix  = "unknown"
 }
 
 def getReleaseInfo(String tag) {
@@ -158,7 +167,5 @@ task configureVersionInfo {
         // Failed to get repo info
         logger.warn("Failed to get repository info: " + ex.message + ". " + \
                     "Only partial build info will be generated.")
-
-        releaseInfo = new ReleaseInfo(jmeVersion);
     }
 }