Changed the spinner to a non-GPL one, added instructions on how to regenerate it, changed the assets attribution, removed old spinner + old spinner's sources.

doc/assets-attribution.txt

@@ -40,11 +40,11 @@ Designer: Bitboy (optimized for 16x16 by Wladimir van der Laan)
 License: Public Domain
 Site: https://bitcointalk.org/?topic=1756.0
 
-Icon:  scripts/img/reload.xcf (modified),src/qt/res/movies/update_spinner.mng
-Icon Pack: Kids
-Designer: Everaldo (Everaldo Coelho)
-License: GNU/GPL 
-Site: http://findicons.com/icon/17102/reload?id=17102
+Movie: src/qt/res/movies/update_spinner.mng
+Site: http://preloaders.net/en/circular
+License: You are encouraged and legally entitled to copy and modify any animated GIF and APNG images, generated by http://preloaders.net web-site.
+All animated GIF and APNG images are completely free to use in all projects (web and desktop applications, freeware and commercial projects), WITH THE EXCEPTION of any other animated images generator applications
+You are encouraged, but NOT obligated to place any reference to http://preloaders.net web-site to use it's content in any projects and applications.
 
 Image: src/qt/res/images/splash2.jpg (Wallet image)
 Designer: Crobbo (forum)

share/qt/how_to_generate_update_spinner.txt

@@ -0,0 +1,39 @@
+How to generate the update_spinner.mng
+
+You will need ImageMagick in your path (the 'convert' executable at least)
+
+Go here: http://preloaders.net/en/circular
+
+Select the base image you want to use.
+
+Image type: APNG
+Transparent background: Yes
+Foreground color: F2A555 (or select a color)
+Animation speed: (default value)
+Preloader size: 16 x 16
+
+(no Advanced Options changed)
+
+Additional download options:
+
+Check Download as sprites
+
+Press Download now
+
+Rename the file to base.png
+
+convert -dispose 3 -delay 10 base.png -crop 16x16 +repage update_spinner.mng
+
+If you want to use the make_spinner.py (gives worse results):
+
+In http://preloaders.net/en/circular change
+
+Preloader size: 128 x 128
+
+Press Download now
+
+Rename the file to base.png
+
+convert base.png -crop 128x128+0+0 reload_scaled.png
+
+and use the make_spinner.py . Note that the results aren't very good.

share/qt/make_spinner.py

@@ -1,43 +0,0 @@
-#!/usr/bin/env python
-# W.J. van der Laan, 2011
-# Make spinning .mng animation from a .png
-# Requires imagemagick 6.7+
-from __future__ import division
-from os import path
-from PIL import Image
-from subprocess import Popen
-
-SRC='img/reload_scaled.png'
-DST='../../src/qt/res/movies/update_spinner.mng'
-TMPDIR='/tmp'
-TMPNAME='tmp-%03i.png'
-NUMFRAMES=35
-FRAMERATE=10.0
-CONVERT='convert'
-CLOCKWISE=True
-DSIZE=(16,16)
-
-im_src = Image.open(SRC)
-
-if CLOCKWISE:
-    im_src = im_src.transpose(Image.FLIP_LEFT_RIGHT)
-
-def frame_to_filename(frame):
-    return path.join(TMPDIR, TMPNAME % frame)
-
-frame_files = []
-for frame in xrange(NUMFRAMES):
-    rotation = (frame + 0.5) / NUMFRAMES * 360.0
-    if CLOCKWISE:
-        rotation = -rotation
-    im_new = im_src.rotate(rotation, Image.BICUBIC)
-    im_new.thumbnail(DSIZE, Image.ANTIALIAS)
-    outfile = frame_to_filename(frame)
-    im_new.save(outfile, 'png')
-    frame_files.append(outfile)
-
-p = Popen([CONVERT, "-delay", str(FRAMERATE), "-dispose", "2"] + frame_files + [DST])
-p.communicate()
-
-
-