pcrlock: error out if requested PCR was dropped (#43260)

- --strict=/--full moved to the OPTION_LONG() parser framework that
replaced getopt in the meantime
- the is-supported commit is dropped, main grew that verb independently.
That also gets rid of the early tpm2_support() gate that broke CI back
then, and TEST-70-TPM2 runs with a software TPM these days anyway
- special_glyph() → glyph() renames
- the log table PCR filter needs an EVENT_LOG_RECORD_IS_PCR() guard now
that the event log has NV-index records