- change build script so that RC2 is a different version for the installer system
- change build script so that RC2 is a different version for the installer system

git-svn-id: f9411aee4f13664f2fc428a5b3e824fe43a079a3@9802 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

jMonkeyEngine/sdk,jMonkeyEngine/sdk,jMonkeyEngine/sdk,jMonkeyEngine/sdk