editors/openoffice-4: Fix dependency issues

Fix an incorrect coinmp-related dependency that was causing spurious
rebuilds. It was also reported to break the build, though I was unable
to reproduce the problem, and it did not seem to break the official
package build. Add another missing dependency. Both issues were
reported by stage-qa.

PR: 263238
(cherry picked from commit 7b40ee8ab732691960bcc7d49eacff1bf1f544fe)