rake-compiler: Drop rake dependency

rake is now included in ruby

Change-Id: I8b0bcd32b042d3827ed7db107e2506a5a1fb55be
Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
spectrwm: bump to version 2.5.0

Change-Id: Iad241a6daaea100012d1fde88d63f4bb9a8e5eaf
Corrected x11-apps/x3270 license
Remove spectrwm cruft
Added [ruby_abis:*(-)?] to all ruby exheres