Handle PATH and LANG from the environment better

Change-Id: Iccfda4a63e600af0c5da9edd1edc3e55e2a7df00
diff --git a/tools/bazel b/tools/bazel
index 6b8f968..fe2a296 100755
--- a/tools/bazel
+++ b/tools/bazel
@@ -99,14 +99,11 @@
 ENVIRONMENT_VARIABLES+=(HOSTNAME="${HOSTNAME}")
 ENVIRONMENT_VARIABLES+=(SHELL="${SHELL}")
 ENVIRONMENT_VARIABLES+=(USER="${USER}")
-ENVIRONMENT_VARIABLES+=(PATH="${PATH}")
+ENVIRONMENT_VARIABLES+=(PATH="/usr/bin:/bin")
 ENVIRONMENT_VARIABLES+=(HOME="${HOME}")
 ENVIRONMENT_VARIABLES+=(LOGNAME="${LOGNAME}")
 ENVIRONMENT_VARIABLES+=(TERM="${TERM}")
-
-if [[ ! -z "${LANG+x}" ]]; then
-  ENVIRONMENT_VARIABLES+=(LANG="${LANG}")
-fi
+ENVIRONMENT_VARIABLES+=(LANG="${LANG:-C}")
 
 if [[ ! -z "${DISPLAY+x}" ]]; then
   ENVIRONMENT_VARIABLES+=(DISPLAY="${DISPLAY}")