lib-sql: Don't link sql libraries to libdovecot-sql.so when building them as plugins.
lib-sql: Don't link sql libraries to libdovecot-sql.so when building them as plugins.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot