Recommended update for tcl
This update for tcl fixes the following issue:
- `TCL_LIBS` in `tclConfig.sh` possibly breaks build on newer service packs. (bsc#1179615)
It is not needed for linking to a dynamic `libtcl` anyway and now it is empty.
This update was imported from the SUSE:SLE-15:Update update project.
- Submitted by Reinhard Max (rmax)
Fixed bugs
bnc#1179615
can not rebuild postgresql as tcl has libieee in the config which has been removed