sxiv-24-bp151.4.2

- Add imlib2-loaders to Requires (bnc#1104541)

- xorg-x11-devel --> pkgconfig(x11, xft)
- Make build verbose
- Respect %optflags (fixes debuginfo too)
- sxiv.makefile.patch: Update, do not force -std=c99, pick
  the compiler's default which is the sanest option nowadays.

- Drop "goals" from descriptions. Remove build-time "features"
  (hotkeys), packages are delivered built to the end user.

- Update to v24
  * Automatically reload the current image whenever it changes
  * Support embedding into other X windows with -e (e.g. tabbed)
  * New option -p prevents cache and temporary file creation
  * Simpler mouse mappings, most basic features are accessible with
    only a mouse (navigate, zoom, pan)
- rebase sxiv.desktop.patch
- rebase sxiv.makefile.patch
- cleanup with spec-cleaner
- use %autosetup macro

- Initial build