nsf

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minor cleanup

reduce variable scope and minor cleanup

* nsf.c (NsfDebugGetDict): Make use of strncat more robust by setting the destingation length to the remainder of the output buffer.

* nsf.c (ForwardArg): Provide a const'ed pointer to strpbrk, as required [CID 294162].

* nsf.c (ParamDefsFormat): Fix overrun in memcpy by correcting the destination-length argument [CID 294165].

* nsf.c: Fix all "-pedantic -ansi" errors.

* nsf.c (ParamDefsStore, NsfProcDeleteProc): Provide for counting a reference to the execNsPtr from the NsfProcContext structure. While I could not devise a script-level path to pull out the rug (execNsPtr) out from under NsfProcContext clients, I can only also not exclude the latter (from future C-level paths?). Better act defensively.

* nsfInt.h (STRING_NEW): Silence GCC 8.1 warnings on truncation risk using strncpy; made me wonder whether STRING_NEW would not be more robust against mis-computations of the destination-buffer length by using snprintf (mainly because snprintf does not nul-pad the destination buffer and always nul-terminates the destination buffer)?

* parameters.test: Adding two test cases to cover previously missed code branches leading to leaking NsfMethodNamePath uses.

* nsf.c (ArgumentParse): Handle NsfMethodNamePath result correctly.

* nsf.c (NsfSetterMethod): Handle NsfMethodNamePath result correctly.

* nsf.c (ObjectCmdMethodDispatch): Close another Tcl_Obj leak incurred by not handling the result from NsfMethodNamePath.

* nsf.c (FindNextMethod): Plumb another memleak (valgrind). The Tcl_Obj computed by NsfMethodNamePath must be refcount corrected.

* nsf.c (AliasGet): Plumbing a memleak found by valgrind. The computed Tcl_Obj from AliasIndex must be refcount-managed explicitly, otherwise the path via AliasGet leaks it.

Fix makefile.vc syntax [skip travis]

Re-code env variable dimension of build matrix

Fix appveyor.yml syntax

Necessary additions to build script and NMAKE/TEA artifacts

appveyor.yml: Add TOOLCHAIN dimension to incorporate MSVC builds

per-object-mixins.tcl: Fix an example script that got broken a long, long time ago. [skip ci]

Fix build.tcl pt. 2 [skip ci]

Fix build.tcl [skip ci]

Add nmake mode to build.tcl [skip ci]

Add allowed failures to Travis setup [skip appveyor]

Set allowed failures on Tcl development branches; report failure on first failing build [skip travis]

* nsf.c (ParamOptionParse), nsfInt.h: Provide for own MAX and MIN macros, the ones reused implicitly from Tcl's tommath have vanished in 8.7 branches; and are not provided otherwise, at least in MinGW settings. Fixes 8.7 builds for MinGW under Win.

Fix descriptor syntax.

Finally, got Windows builds (MinGW) working on Appveyor. Cleaning up build scripts.

Trying to set HOME dir explicitly, 2nd try, sigh! [skip travis]

Trying to set HOME dir explicitly [skip travis]