- Small cleanup with spec-clener

- Update to version 2.1.0
* Linux: Delay accounting metrics
(thanks to André Carvalho)
* Support for real-time signals
(thanks to Kang-Che Sung)
* 'c' key now works with threads as well
* Session column renamed from SESN to SID
(thanks to Kamyar Rasta)
* Improved UI for meter style selection
(thanks to Kang-Che Sung)
* Improved code for constructing process tree
(thanks to wangqr)
* Compile-time option to disable setuid
* Error checking of various standard library operations
* Replacement of sprintf with snprintf
(thanks to Tomasz Kramkowski)
* Linux: performance improvements in battery meter
* Linux: update process TTY device
* Linux: add support for sorting TASK_IDLE
(thanks to Vladimir Panteleev)
* Linux: add upper-bound to running process counter
(thanks to Lucas Correia Villa Real)
* BUGFIX: avoid crash when battery is removed
(thanks to Jan Chren)
- Refreshed htop-desktop-file-fix-thoenig-01.patch
- Added htop-script-python3.patch