[[ Emacs ]] Refine indentation rules.

Fix indentation at the start of blocks (e.g. if).
Merge pull request #1352 from peter-b/misc-emacs

[[ Emacs ]] Refine indentation rules.
[[Bug 13840]] Stop MCS_savebinaryfile() from failing if MCresult non-empty.

If MCresult had a nonempty value before calling MCS_savebinaryfile(),
then it would indicate failure by returning false even on success.