purple-libsteam-1.6.1-bp152.3.17

- Rename the purple-libsteam package to libpurple-plugin-libsteam.
- Rename the pidgin-libsteam package to pidgin-plugin-libsteam.
- Require Pidgin of the exact or greater version.
- Make the pidgin-plugin-libsteam package noarch.
- Add pidgin-opensteamworks-1.6.1-cflags.patch: Support setting
  CFLAGS.
- Don't own Pidgin pixmap directories.
- Correct licence: GPL-3.0+.
- Spec cleanup.

- Move all non-%setup,non-%patch commands out of %prep to %build
  for quilt.

- Updated to version 1.6.1

- Added license file.

- Applyed Maxim Orlov's fixes.

- Created first RPM spec for Fedora/openSUSE.