[Harmony Wiki] Update of "Policytool" by AndrasBelicza

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The following page has been changed by AndrasBelicza:
http://wiki.apache.org/harmony/Policytool

The comment on the change is:
initial content

New page:
Policytool is a utility program which can be used to view and edit the contents of policy files.

A policy file is a plain-text file with a .policy extension, that maps remote requestors by domain, to permission objects. 
Policytool is implemented in Java, therefore making it easier to call it from java programs, to reuse its parts, and is ready as-is for cross platform usage.

It is compatible with Sun's policytool, and introduces a new features: viewing and editing the policy file directly in a built-in text editor (text area with synchronized content with the well-known GUI).

The UI of the original policytool looks quite simple as it does not uses swing components or any other external libraries. Policytool is implemented with swing therefore giving a richer UI:
    -buttons and menus with mnemonics

    -tabbed pane for the 2 editing panel

    -components belonging together are placed in a titled border