Use icotool instead of ImageMagick

[GoogleCodeExporter]

What steps will reproduce the problem?
wget http://download.2gis.ru/arhives/2GISShell-3.5.5.0.orig.zip
unzip 2GISShell-3.5.5.0.orig.zip
wlcreator 2gis/3.0/grym.exe

What is the expected output? What do you see instead?
I want to see all app icons but i can't find big beatiful icon.

What version of the product are you using? On what operating system?
wclreator-1.0.3

Please provide any additional information below.
I wrote a patch to fix this. 
https://raw.github.com/RussianFedora/wlcreator/5fc46e6d0bcb077f03ec160b550c284b7
e799848/wlcreator-icotool.patch
See a result of my patch in attachments.

Original issue reported on code.google.com by drizt@land.ru on 4 Nov 2011 at 6:04

Attachments:

• [Wine Launcher Creator_015.png](https://storage.googleapis.com/google-code-attachments/wine-launcher-creator/issue-6/comment-0/Wine Launcher Creator_015.png)

[GoogleCodeExporter]

Without patch

Original comment by drizt@land.ru on 4 Nov 2011 at 6:06

• Added labels: ****
• Removed labels: ****

Attachments:

• [Wine Launcher Creator_016.png](https://storage.googleapis.com/google-code-attachments/wine-launcher-creator/issue-6/comment-1/Wine Launcher Creator_016.png)

[GoogleCodeExporter]

Original comment by drizt@land.ru on 18 Nov 2011 at 6:06

• Changed state: Fixed
• Added labels: ****
• Removed labels: ****