glfw2-2.7.6-bp156.3.4

- revive 2.7.6 as glfw2 package
- add soname to shared library (glfw-2.7.6-soname.diff)
- drop static lib
- move .so to subdir to avoid conflict with libglfw3

- install COPYING.txt as well

- update to 2.7.6
- spec improvement and cleanup
  - updated license information
  - changed "BuildRequires: package-name" into
    "BuildRequires: pkgconfig(name)" (fixes Factory build)
- dropped glfw-force_sysctl_support.patch
- dropped glfw-rpmlintrc - there was nothing useful

- Parallel build with %_smp_mflags; strip redundant spec sections

- update to 2.7.2
- package shlib too
- shared library naming policy
- static lib moved to libglfw-devel-static

- initial version (2.5.0)