Workaround for mingw-w64 (AMD64-only) bug: It appears that zdll.lib (as produced by Microsoft tools) doesn't import the zlib symbols correctly, so use "libz.dll.a" produced with mingw-w64 tools in stead.
Fix env.test when running mingw-w64 (AMD64 build) test-suite on wine64
Fix some gcc warnings which become visible with -Wextra
Fix env.test when running mingw-w64 (AMD64 build) test-suite on wine64. 
Fix some gcc warnings which become visible with -Wextra
Don't use deprecated stricmp/strnicmp any more, but underscored variant for non-GNU compilers.
Don't use deprecated stricmp/strnicmp any more, but underscored variant for non-GNU compilers. 
Some formatting - improved comments.
split off TclInitStubTable() as separate function - which does the actual stub table initialization - previously part of Tcl_InitStubs().
link tclsh with stub library, just like xttest and tcltest, in order to allow additional static stub-enabled libraries to be linked with it.
On 32-bit platforms, 12 characters for version is enough, on 64-bit platforms it will be aligned to 16 characters anyway.
Fix [a876646efe]: re_expr character class [:cntrl:] should contain \u0000 - \u001f
Fix [a876646efe]: re_expr character class [:cntrl:] should contain \u0000 - \u001f
Use more portable TclIsSpaceProc() in stead of isspace(). 
Make sure that "string is space \u180e" continues to return 1 for whatever unicode version.
Use more portable TclIsSpaceProc() in stead of isspace().
Updates to redirect bug reports to the new tracker location.
Fix [42b8083613]
Updates to redirect bug reports to the new tracker location.
Better place to put vsnprintf switch, so it is usable by all *.c files. 
Fix comment on _ANSI_ARGS_ which is no longer true since 8.6.
Fix uniClass tool which was the real cause for [a876646efe], and add test-case for it.
Fix uniClass tool which was the real cause for [a876646efe], and add test-case for it.
Fix [3611974]: InitSubsystems multiple thread issue