correced spelling errors in messages
updated core-site.xml template files with easy to find dummy values for fields that get updated on install
updated mapred-site.xml template files with easy to find dummy values for fields that get updated on install
settings updated
started adding functions to handle DB data
updateded to use SSH & SCP wrapper functions. Switched to readable ssh commands
updated update_master.bash  to use SSH & SCP wrapper functions. Switched to readable ssh commands
updated update_slaves.bash  to use SSH & SCP wrapper functions. Switched to readable ssh commands
updated software_install.bash  to use SSH & SCP wrapper functions. Switched to readable ssh commands