[Bug c/79855] New: params.def: missing period in PARAM_MAX_STORES_TO_MERGE

["roland.illig at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79855

            Bug ID: 79855
           Summary: params.def: missing period in
                    PARAM_MAX_STORES_TO_MERGE
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: roland.illig at gmx dot de
  Target Milestone: ---

The text for PARAM_MAX_STORES_TO_MERGE is missing the final period. Most other
messages have a final period.

All messages in params.def should use consistent grammar. Therefore they all
need a final period.

It should also be trivial to write a little program that checks this
automatically, to prevent future bug reports of the same kind.