Пакет rpm-build-tcl: Изменения

- Replaced "egrep" with "grep -E".

- Fixed tcl extension dependencies version generation:
  + Strip away "alpha" and "beta" identifiers from the generated versions;
  + Do not provide odd dependencies.

- Revised TCL extensions dependencies generation in incompatible way to solve
  problem pointed in
  https://lists.altlinux.org/pipermail/devel/2020-November/212462.html.

- Added %tea_patch macro.
- Added warning that %teapatch is deprecated.

- fix possible file truncation while generating dependencies

- new Tcl/Tk extension packaging policy

- .spec: do not require rpm-build (express the compatibility with
  Conflicts).
- .spec: use standard  %_rpmmacrosdir for the macros according
  to https://www.altlinux.org/RPM_Macros_Packaging_Policy.

- modified for use with tm modules, found in tcl8.5

- do not require /usr/bin/tclsh to not create circular deps

- added new files, for use with new rpm-build:
  + tcl.req.files (.prov.files) - will select tcl files for req/prov
  + /etc/rpm/macros.d/tcl.env - piece of rpm-build scriplets' preamble
  + also placed rpm-build tcl macros to /etc/rpm/macros.d/tcl
- tcl.req: enabled warning when "eval source" fails

- %teapatch macro resurrected

- #6488 again

- #6488 fixed

- catched 'exit' in scripts, which can abort findreq process

- added conflicts to older tcl-devel

- Initial release