Update build.gradle to have single line for specifying minecraft version, and will update ForgeVersion.java as needed.

build.gradle

@@ -21,15 +21,17 @@ repositories {
             url = "file:///home/cpw/projects/repo"
         }
 }
+
 apply plugin: "maven"
 apply plugin: "net.minecraftforge.gradle.patcher"
 apply plugin: "net.minecraftforge.gradle.launch4j"
 
+minecraft.version = "1.10.2"
+
 minecraft {
-    version = "1.10.2"
     mappings = 'snapshot_nodoc_20160518'
     workspaceDir = "projects"
-    versionJson = "jsons/1.10.2-dev.json"
+    versionJson = "jsons/${minecraft.version}-dev.json"
     buildUserdev = true
     buildInstaller = true
     installerVersion = "1.4"
@@ -66,7 +68,7 @@ extractForgeResources { exclude "**/log4j2.xml" }
 genGradleProjects { addTestCompileDep "junit:junit:4.12" }
 
 processJson {
-    releaseJson = "jsons/1.10.2-rel.json"
+    releaseJson = "jsons/${minecraft.version}-rel.json"
     addReplacements([
         "@minecraft_version@": project.minecraft.version,
         "@version@": project.version,
@@ -218,11 +220,13 @@ task ciWriteBuildNumber << {
     def file = file("src/main/java/net/minecraftforge/common/ForgeVersion.java");
     def bn = System.getenv("BUILD_NUMBER")?:project.ext.properties.buildNumber?:0;
     def outfile = "";
-    def ln = System.getProperty('line.separator')
+    def ln = "\n"; //Linux line endings because we're on git!
 
     file.eachLine{ String s ->
         if (s.matches("^    public static final int buildVersion    = [\\d]+;\$"))
             s = "    public static final int buildVersion    = ${bn};";
+        if (s.matches('^    public static final String mcVersion = "[^\\"]+";'))
+            s = "    public static final String mcVersion = \"${minecraft.version}\";";
         outfile += (s+ln);
     }
     file.write(outfile);
@@ -371,7 +375,7 @@ task resetBuildNumber << {
 }
 // re-add old tasks for jenkins compat
 // should be remvoed, and the jenkisn fixed when no longer building with FG 1.2
-task setupForge { dependsOn 'setup' }
+task setupForge { dependsOn 'setup', 'ciWriteBuildNumber' }
 task buildPackages { dependsOn 'build' }
 
 //Temporary hack to fix compile errors caused by mappings shading in Bootstrap