Damien George 96740be357 py/mperrno: Define MP_EWOULDBLOCK as EWOULDBLOCK, not EAGAIN. ...

Most modern systems have EWOULDBLOCK aliased to EAGAIN, ie they have the
same value.  But some systems use different values for these errnos and if
a uPy port is using the system errno values (ie not the internal uPy
values) then it's important to be able to distinguish EWOULDBLOCK from
EAGAIN.  Eg if a system call returned EWOULDBLOCK it must be possible to
check for this return value, and this patch makes this now possible.

2018-05-01 15:53:25 +10:00

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