We prepared an installation package for UNIX and Windows here. We prepared packages for UNIX and Windows including RTSystemEditor and RTCBuilder, all containing (Eclipse 4.4.2 + Japaneseization + RTSystemEditor + GEF + EMF + XSD + RTCBuilder). It is very easy to install, so please use those who would like to try to move them.
Java Development Kit 7 (JDK) is required, please install in advance. Eclipse archive (package file in compressed state) has over 100 MB. After downloading, please unpack the archive to the directory you want to install. There is no installer in Eclipse in particular, you can just use the archive just expand it.