Convert target-descriptions.c to new hash table

This converts target-descriptions.c to use the new hash table.

Change-Id: I03dfc6053c9856c5578548afcfdf58abf8b7ec2c
Co-Authored-By: Tom Tromey <tom@tromey.com>
Approved-By: Tom Tromey <tom@tromey.com>
1 file changed