[PATCH 0/16] MR10: use OEM code page for output

[eric pouech (@epo)]

review and fix the logic when writing text oriented output in programs/*
- some where using GetConsoleCP() or GetConsoleOutputCP() if WriteConsoleW fails; this is wrong as if WriteConsole failed, then it could mean that program isn't attached to a console (or here running under shell-no-window)... Luckily, in these cases, the returned value by GetConsole*CP() is 0, and CP_ACP is also 0... but it's likely not what was expected at first glance
- testing under windows shows that it's rather GetOEMCP() which is used in those cases
- simplified some code and checked for allocation failure where missing


Signed-off-by: Eric Pouech <eric.pouech at gmail.com>

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