Add ability to have grabber sub-dirs in MythWeather scripts directory

[Joe Ripley <vitaminjoe@…>]

This patch allows the MythWeather plugin to store its grabber scripts in subdirectories instead of all grabbers in one directory.

The new code recurses through the mythweather/scripts directory and finds any executable files it can. Any number of directory levels are possible.

[Joe Ripley <vitaminjoe@…>]

Add ability to organize grabber scripts and related files into subdirectories of MythWeather /usr/{local/}share/scripts directory

[Joe Ripley <vitaminjoe@…>]

I wasn't sure how to display the progress of the script search due to the nature of the search algorithm (i.e. recursive function). Ideas are welcome to improve the UI experience of waiting for MythWeather to search for scripts. :)

[stuartm]

(In [14994]) Allow mythweather grabbers to be kept in sub directories of the script directory. This should allow us to keep things a little tidier.

Patch by Joe Ripley.

Closes #3938

[anonymous]

this one just broke my daily svn build: the MythProgressDialog was renamed from busyd to busy, but in line 115/116 the two old calls survived:

busyd->Close(); busyd->deleteLater();

[stuartm]

I fix that problem 8 hours ago.