Add script to calculate PCR[18].
Add script to calculate PCR[19] from module list.
Remove unnecessary leading slash from .gitignore rules.
Update ChangeLog to include pcr18 and pcr19 scripts.
Fix typo.
Implement body of pcr19: calculate sha1 hash of modules in the order provided and extend the PCR emulator with each hash.
Remove unnecessary imports from pcr(18|19).in
Move declaration of message strings out of program body.