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Remove merge artifact

Remove merge artifact

merged

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nsf.tcl (::nsf::debug::*): Switch to notice severity level

nsf.tcl (::nsf::debug::*): Switch to notice severity level

- reduce implicit conversions

- define stubproc always, when "-deprecated" was used - use "Debug" severity for debug messages

- white space change (avoid tabs)

Merge branch 'master' into 2-1-0-rc

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* nsf.c (GetObjectFromObj, TclDeletesObject): Remove two earlier fixes to deal with ::nsf::object::alloc failing under cmd deletion/recreation. The issue has been tackled more generally by a Tcl-side fix. Background: Since 2005 (commit fcb9ab1df3a9b2d1), in Tcl the cmdEpoch state in delete traces and delete callbacks (deleteProcs, destructors) has been compromised. Bumping the epoch of the cmd under deletion before executing the traces and callbacks had the potential of caching the cmd under in Tcl_Objs beyond its deletion (at least in our code path). In July 2017 (8.7a, commit 54fac92610d3bdd9), this potential realised by removing a guard expression (CMD_IS_DELETED) in the Tcl_Obj cache invalidation logic, which had protected from such invalid caches (as a side effect). As of today (8.7a, commit 71fa1f9c91), the underlying timing problem of epoch bumping has been resolved.

* nsf.c (TclDeletesObject): Provide an alternative fix to reflect the changed cache invalidation policy for Tcl_Obj cmd intrep in 8.7.

Save code instrumentation to demonstrate the problem

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move the logic if Tcl_GetCommandFromObj() is returning an epoched obj to a more central place (GetObjectFromObj()) such it might kick in on other potential occasions as well.

- use TclFreeIntRep() instead of direct function calls - perform TclFreeIntRep() for Class and Object creation under Tcl 8.7

fix for Tcl 8.7: - when recreating an nsf object in in tcl 8.7, we seem to have to invalidate the intrep, otherwise the new command is not picked up by a later Tcl_GetCommandFromObj()

* nsf.c (NsfMethodAliasCmd): Tcl 8.7 is more picky about typePtr and intrep being in line. We need to NULL the typePtr explicitly. TclFreeIntRep does so for us as good Tcl citizens, rather than setting bodyObj->typePtr == NULL directly.

* Updated copyright dates and copyright notices

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* Updated copyright dates and copyright notices

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- address potential crash when a filter calls a filter which calls unknown

- prefer lower case "U" suffix to improve readability

ObjectDispatchFinalize: First attempt to tackle filtered-unknowns issue

ExitHandler(): Re-locate clearing history from finalize to ExitHandler

NsfFinalizeCmd(): Clear Tcl's history list explicitly before finalizing NSF (see als ticket 1ae12987cb).

nsfStack.c: Unify writing style

nsfProfile.c: Fix typos in code comments

nsfFunPtrHashTable.c: Fix typos in code comments

- remove spurious blank in error message - fix typo in print string

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- improve comment and signature of NsfNoCurrentObjectError - improve wording of other commends, keep cmments within the limits of the header/trailer line

nsfError.c: Fixed typos and unified writing style in code comments

nsfObj.c: Fix some typos and align writing style