[e-lang] Patches for review, mostly on ProcessSugar

[Kevin Reid]

While working on an E project I wrote these changes to E-on-Java. They are simple and I am reasonably confident in their correctness, but I would appreciate a review, especially of #2 and #4 which are semantic changes.

The patches were generated by git format-patch; any suggestions on better ways to publish a bunch of commits for review are welcome. (I have moved my workflow to using git-svn instead of svn, as does Thomas Leonard.)

#1 fixes a typo bug: Sugar method Process#attachStderr actually attaches stdout. It also notes that these operations as defined leak vats.

#2 adds an operation Process#terminates/0; it is like resultsVow/0 in that it returns a promise for when the process terminates, but it does not claim stdout or stderr.

#3 fixes misspellings of "opening" and "opener" with two "n"s.

#4 makes CharPipeAdapter flush its Writer (and also copy in bulk); without this, output may be indefinitely delayed or lost if nothing other than the CharPipeAdapter is working with the Writer and the Writer buffers indefinitely.

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-- 
Kevin Reid                                  <http://switchb.org/kpreid/>