combine_tessdata -d outputs to stderr instead of stdout

[tfmorris]

Current Behavior

The directory listing from combine_tessdata -d is sent to stderr while the network listing from combine_tessdata -l gets sent to stdout.

https://github.com/tesseract-ocr/tesseract/blob/main/src/ccutil/tessdatamanager.cpp#L214-L218

Expected Behavior

I think it would be preferable to also have the output for -d to go to stdout, but I'm not sure if there are any compatibility concerns to worry about for TessdataManager::Directory()

As a workaround (courtesy of StackOverflow), one can redirect stderr as follows to get e.g. the version string in the first line:

$ combine_tessdata -d kan.traineddata 2>&1 >/dev/null | head -n 1
Version:4.00.00alpha:kan:synth20170629:[1,36,0,1Ct3,3,16Mp3,3Lfys64Lfx96Lrx96Lfx384O1c1]

Suggested Fix

Have combine_tessdata -d send its output to stdout

tesseract -v

Current HEAD commit 51cf430

Operating System

macOS 11 Big Sur

Other Operating System

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