Fix make check with "funny" locales (#420)

'ch' in cs_CZ locale is technically just one character, so directory
name 'ccache' fails the test

1 files changed, 2 insertions, 0 deletions

diff --git a/test/run b/test/run
index b4a96b47..f8104093 100755
--- a/test/run
+++ b/test/run
@@ -273,6 +273,8 @@ EOF
 # =============================================================================
 # main program
 
+export LC_ALL=C
+
 if pwd | grep '[^A-Za-z0-9/.,=_%+-]' >/dev/null 2>&1; then
     cat <<EOF
 Error: The test suite doesn't work in directories with whitespace or other