[Patch] Add dirent.d_type support to Cygwin 1.7 ?

[Christian Franke]

This is an experimental patch to add dirent.d_type support to readdir(). 
It sets d_type to DT_DIR/REG for normal disk directories/files and 
DT_UNKNOWN in all other cases.

Test result with original find (4.4.0-3) vs. same find rebuild with new 
sys/dirent.h:

$ export TIMEFORMAT='%1R'

$ time find /cygdrive/c/cygwin >/dev/null
30.5

$ time find-with-d_type /cygdrive/c/cygwin >/dev/null
9.5

$ time cmd /c dir /a/s 'c:\cygwin' >/dev/null
5.2

Due to the missing initialization of '__d_unused1', new programs with 
d_type support would not be backward compatible.


Christian

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