config.mak.uname: add FREAD_READS_DIRECTORIES for NonStop platform

The NonStop platform needs this configuration item specified as
UnfortunatelyYes so that config directory files are correctly processed.

Signed-off-by: Randall S. Becker <rsbecker@nexbridge.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

config.mak.uname

diff --git a/config.mak.uname b/config.mak.uname
index 786bb2f..281c547 100644
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -490,6 +490,7 @@
 	OLD_ICONV = UnfortunatelyYes
 	NO_REGEX = NeedsStartEnd
 	NO_PTHREADS = UnfortunatelyYes
+	FREAD_READS_DIRECTORIES = UnfortunatelyYes
 
 	# Not detected (nor checked for) by './configure'.
 	# We don't have SA_RESTART on NonStop, unfortunalety.