Rebuild systemimager RPMs
1. Prepare a rhels6.3 server, you could use other redhat version, but the RPMs listed in step3 come from the result in rhels6.3.
    if you use other os version, maybe you need to find dependent RPMs by yourself 

2. Make sure your build server can access internet

3. Install following dependent RPMs. RPMs listed in first part shipped in rhels6.3. RPMs listed in second part could be found in extra-dep-rpm directory.
yum install -y make
yum install -y gcc-c++
yum install -y ncurses-devel
yum install -y readline-devel
yum install -y rpm-build
yum install -y docbook-utils
yum install -y dos2unix
yum install -y flex
yum install -y libtool
yum install -y openssl-devel
yum install -y libuuid-devel
yum install -y python-devel
yum install -y gettext
yum install -y lzop

yum install -y device-mapper-devel
yum install -y gperf
yum install -y glibc-static

4. Copy systemimager_sourcecode.tar to any directory of your server and untar
tar xvf systemimager_sourcecode.tar

5. If you need to change systemimager RPM's version, refer to below information
change main version:       vi ~/trunk/VERSION
change secondary verion: vi ~/trunk/systemimager.spec  line13

6. Build rpm, run the below 3 commands one by one
 (1). cd  ~/trunk/
 (2). make source_tarball

--------------maybe you will see the following error, just ignore it---------------
gpg: directory `/root/.gnupg' created
gpg: new configuration file `/root/.gnupg/gpg.conf' created
gpg: WARNING: options in `/root/.gnupg/gpg.conf' are not yet active during this run
gpg: keyring `/root/.gnupg/secring.gpg' created
gpg: keyring `/root/.gnupg/pubring.gpg' created
gpg: no default secret key: No secret key
gpg: signing failed: No secret key
make: *** [/systemimager/trunk/tmp/systemimager-4.3.0.tar.bz2.sign] Error 2
-------------------------------------------------------------------------------------------

 (3). make rpm

RPMs will be created in  /root/rpmbuild/RPMS/noarch/