Edited install/install.py so that scriptrunner(scripttype, os, arch, logfile) function returns logfile to main() to be closed.
Added install_altinstall.py for use with RHEL x64 systems
Adding initial versions of files for redhat scripts.
In install/dependency/dependency_ubuntu.py: Edited function descriptions
Changed some uses of "\" to os.sep
Committing draft versions of install/redhat/altinstall.py and install/redhat/pythonsetup.py
In run_initialize_instance.py: Typo fixes and other editing.
In install/dependency/dependency_redhat.py: Added package-checking functions.