Similar to rL257663, remove `function` keywords from export.sh and
tag.sh, since they are marked to be run with /bin/sh.

llvm-svn: 257994
diff --git a/llvm/utils/release/export.sh b/llvm/utils/release/export.sh
index 2fd4206..d978055 100755
--- a/llvm/utils/release/export.sh
+++ b/llvm/utils/release/export.sh
@@ -20,7 +20,7 @@
 release=""
 rc=""
 
-function usage() {
+usage() {
     echo "Export the SVN sources and build tarballs from them"
     echo "usage: `basename $0`"
     echo " "
@@ -29,7 +29,7 @@
     echo "  -final         The final tag"
 }
 
-function export_sources() {
+export_sources() {
     release_no_dot=`echo $release | sed -e 's,\.,,g'`
     tag_dir="tags/RELEASE_$release_no_dot/$rc"