[issue21688] Improved error msg for make.bat htmlhelp

[Zachary Ware]

Zachary Ware added the comment:

Could you give me the exact message you get currently?  If it's just "'C:\Program' is not recognized as an internal or external command, operable program or batch file.", that's a different issue than if the whole path to hhc.exe is displayed.

Otherwise, I like the patch, except you can reuse the %HTMLHELP% variable instead of reconstructing it from %_PRGMFLS%.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21688>
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