tzdata update
Make HTML generator more resilient against problems when generating docs for
older versions of Tcl/Tk.
changed msgcat version from 1.4 to 1.5 in doc/msgcat.n, tests/clock.test, library/clock.tcl, win/makefile.bc and tools/tcl.wse.in
Added tooltip generation to contents and keywords pages.
merge updates to make HTML generation better
Remove another reference to tcl.wse.in
Revert msgcat requirement bump in the "clock" module.  Should be no need for it.
Pull msgcat fixes over the main dev branch
Missing bits of the msgcat 1.4 -> 1.5 bump.
Updated the language of the documentation so that "object" refers to an OO
concept throughout, and a Tcl_Obj is called a "value" (which is what it is).
Create Tcl 8.6.0 release branch
Declare TclOO portion of the Tcl API to be stable -> TclOO 1.0
merge trunk
dup test name
Flag USE_TCLOO_STUBS is not necessary any more for extensions: Stubs are the only way to access TclOO, so it is implied.
merge mark
ChangeLog release mark
merge trunk
re-enable bcc-tailcall, after fixing an infinite loop in the TCL_COMPILE_DEBUG mode
added forgotten Changelog entry