[client] reorder exported header files in makefile

I found it easier to follow the list of exported files on filesystem
compared with the corresponding list in CMakeLists.txt when the
filenames are ordered alphabetically.

This patch doesn't contain any functional changes.

This is a follow-up to ece7b5653998db318e4baa5d57f27ba3a836731d.

Change-Id: I25ac0cf82c621bfe3dfb92398b0ad725f3ceb19a
Reviewed-on: http://gerrit.cloudera.org:8080/16786
Reviewed-by: Mahesh Reddy <mreddy@cloudera.com>
Tested-by: Kudu Jenkins
Reviewed-by: Grant Henke <granthenke@apache.org>
1 file changed