dbvis connections gathering

DbVisualizer stores the user database configuration in dbvis.xml.
This module retrieves the connections settings from this file.
Update dbvis_enum.rb
Delete dbvis_enum.rb
DbVisualizer stores the user database configuration in dbvis.xml
This module retrieves the connections settings from this file
Retabbed and reformatted
Change = to ==

This is an if condition, not an assignment
Use Rex to check IPv4 instead of using resolv
Author's Twitter handle should be a comment

msfconsole treats whatever is in <> as the author's email, not
twitter handle
File should be checked for existence before reading
Remove the last exception handler

We're already checking the file path with file?(), so we don't need
to use exception handling for this task anymore.
+ not preferred
For for missing an end
I mean "unless", not "if"
Account for EOFError condition
Change header
Change module name for consistency
Merge branch 'wchen-r7-pr3522'
Changes ok
Added compatibility with dbvis <= 6

Checking for "config" folder existence if "config70" is not found.
Update dbvis_enum.rb
Old config file update

Added functions to parse old and new config files.