record: omit meaningless 'commit' suggestion at 'hg commit -i'
Before this patch, 'hg commit -i' under non-interactive mode suggests
'use commit instead', and it obviously meaningless.
This patch makes 'record.record'()' examine 'ui.interactive()' and
show suggestion by itself before calling 'commands.commit()'.
This allows 'commands.commit()' to specify 'None' for 'cmdsuggest'
argument of 'cmdutil.dorecord()' to omit meaningless 'commit'
suggestion at 'hg commit -i'.
