[issue1154351] add get_current_dir_name() to os module

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:

The glibc has a get_current_dir_name() function which returns the same value that getcwd(), the difference is that get_current_dir_name() allocates memory. If someone wants to add a function using PWD env var, a different function name should be found.

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nosy: +vstinner

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue1154351>
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