Unset locale while pattern matching

This commit resolves the "Invalid collation character" error thrown by
'grep' when validating directory names with special characters. It sets
locale to "C" before running 'grep'.

Change-Id: Ia005744cfc1799dff0148602bcb99d947f8c805d

Author: jserv

scripts/commit-msg.hook

@@ -476,7 +476,7 @@ validate_commit_message() {
 
   # Alert if the commit message appears to be written in Chinese.
   # This pattern matches any Chinese character (common CJK Unified Ideographs).
-  MISSPELLED_WORDS=$(echo "$FULL_COMMIT_MSG" | grep "[一-龥]")
+  MISSPELLED_WORDS=$(echo "$FULL_COMMIT_MSG" | LC_ALL=C grep "[一-龥]")
   if [ -n "$MISSPELLED_WORDS" ]; then
     add_warning 1 "Commit message appears to be written in Chinese: $MISSPELLED_WORDS"
   fi

scripts/pre-commit.hook

@@ -99,7 +99,7 @@ RETURN=0
 
 # Disallow non-ASCII characters in workspace path
 workspace=$(git rev-parse --show-toplevel)
-if echo "$workspace" | grep -q "[一-龥]"; then
+if echo "$workspace" | LC_ALL=C grep -q "[一-龥]"; then
   throw "The workspace path '$workspace' contains non-ASCII characters."
 fi