Improved portability of tests

Removed assumptions about umask and locale. Fixed hostname
tests to work even when the host has no DNS domain set.

Signed-off-by: Dan Fandrich <dan@coneharvesters.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/testsuite/makedevs.tests b/testsuite/makedevs.tests
index f69b4a6..f19af8a 100755
--- a/testsuite/makedevs.tests
+++ b/testsuite/makedevs.tests
@@ -4,6 +4,10 @@
 
 . ./testing.sh
 
+unset LANG
+unset LC_COLLATE
+unset LC_ALL
+
 # ls -ln is showing date. Need to remove that, it's variable
 # sed: (1) "maj, min" -> "maj,min" (2) coalesce spaces
 # cut: remove date