File-Glob: exercise GLOB_MARK, GLOB_NOCHECK, etc.

File-Glob: exercise GLOB_MARK, GLOB_NOCHECK, etc.

For GH #21744

t/basic.t:

* Exercise GLOB_NOCHECK flag, without and with GLOB_QUOTE flag.

* Move one particular assignment to '@a' was only used within
the subsequent SKIP block.  For consistency with other SKIP blocks, move
list assignment to within the block.

* Exercise GLOB_NOSORT flag, thereby confirming that it is the default
sorting mechanism.  There is, of course, a slight chance that using
GLOB_NOSORT will return names in the same order as the default
GLOB_ALPHASORT.  So the best we can do is to confirm that the same names
were returned in each instance.

* Explicitly test GLOB_ALPHASORT

t/global.t:

* Provide descriptions for two unit tests previously lacking
them.

Corrections:
* t/basic.t: Tidy leading whitespace
* Glob.pm: One-character typo
* Increment $VERSION.
* Correct count within SKIP block