Bug#736574: gwenview: no webp image support

[张敬强 <godfrey.public@gmail.com>]

Package: gwenview
Version: 4:4.11.3-1
Severity: normal

Dear Maintainer,

Gwenview doesn't support webp image now.
It's seems that gwenview version 4.11.3 in Fedora 20 support webp.
And libwebp is in debian repos.
Here's a demo image:
    http://antimatter15.github.io/weppy/tinybrot.webp

And kolourpaint/gimp lack webp support also.

-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (500, 'testing-updates'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.12-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=zh_CN.UTF-8, LC_CTYPE=zh_CN.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gwenview depends on:
ii  kde-runtime      4:4.11.5-1
ii  libc6            2.17-97
ii  libexiv2-12      0.23-1
ii  libgcc1          1:4.8.2-14
ii  libjpeg8         8d-2
ii  libkactivities6  4:4.11.5-1
ii  libkdecore5      4:4.11.5-1
ii  libkdeui5        4:4.11.5-1
ii  libkfile4        4:4.11.5-1
ii  libkio5          4:4.11.5-1
ii  libkipi11        4:4.11.5-1
ii  libkonq5abi1     4:4.11.5-1
ii  libkparts4       4:4.11.5-1
ii  liblcms2-2       2.2+git20110628-2.3+b1
ii  libnepomukcore4  4:4.11.5-2+b1
ii  libphonon4       4:4.7.1-1
ii  libpng12-0       1.2.49-5
ii  libqt4-opengl    4:4.8.5+git209-g718fae5+dfsg-1
ii  libqt4-svg       4:4.8.5+git209-g718fae5+dfsg-1
ii  libqtcore4       4:4.8.5+git209-g718fae5+dfsg-1
ii  libqtgui4        4:4.8.5+git209-g718fae5+dfsg-1
ii  libsolid4        4:4.11.5-1
ii  libstdc++6       4.8.2-14
ii  libx11-6         2:1.6.2-1
ii  phonon           4:4.7.1-1

Versions of packages gwenview recommends:
ii  kamera  4:4.11.3-1+b1

Versions of packages gwenview suggests:
ii  svgpart  4:4.11.3-1

-- no debconf information