+ Del extra spaces, import os.path as osp

[travisci skip]

+ Fixed the hangs at `test_git:TestGit.test_handle_process_output()`.
[travisci skip]

+ The code in `_read_lines_from_fno()` was reading the stream only once
per invocation, so when input was larger than `mmap.PAGESIZE`, bytes
were forgotten in the stream.
+ Replaced buffer-building code with iterate-on-file-descriptors.
+ Also set deamon-threads.

+ More win-fixes:
  + Do not check unicode files in < py3.
  + util, #519: x4 timeout of lock-file blocking, failing in Appveyor.

+ FIXED most hangs BUT no more `git-daemon` un-killable!
+ Use logger for utils to replace stray print().

+ test_diff: replace asserts with unittest-asserts.

+ Retrofit try...finally blocks to ensure killing the daemon - now
vulnerable also on Windows due to Popen() + CREATE_NEW_PROCESS_GROUP
- BUT `test_base.test_with_rw_remote_and_rw_repo()` TC fails in MINGW
due to invalid remote-URL in fetching-repo's config. Another day.
- NEXT FREEZE to solve: test-diff_interface() under MINGW!

+ see
http://help.appveyor.com/discussions/problems/5334-nosetests-finsih-bu-build-stuck-and-next-job-dealys-to-start
+ Use `io.DEFAULT_BUFFER_SIZE`.
+ test_commit: replace asserts with unittest-asserts.
- TRY Popen() NO universal_newlines: NO, reverted in next commits.

+ 
[travisci skip]

+ On MINGW-git, daemon exists but if invoked as 'git daemon', DAEMON
CANNOT DIE!
+ So, launch `git-daemon` on Apveyor, but
- remote TCs fail due to paths problems.
+ Updated README instructions on Windows.
+ Restore disabled remote TCs on Windows.
+ Disable failures on daemon-tests only the last moment
  (raise SkipTest) so when ready, it will also pass.

+ Simplify call_process, no win-code case, no `make_call()` nested func.
+ Del needless WinError try..catch, in `_call_process()` already
converted as GitCommandNotFound by `execute()`.
+ pyism: kw-loop-->comprehension, facilitate debug-stepping

+ PY3 means "PY3 or later" (TODO: fix also for  *gitdb* project).

+ TCs: unittest-asserts for git-tests.

+ FIX all Diff TCs.

+ Stop using gitdb's respective helper.
+ Fix files chmod(555) which CANNOT DELETE on Windows (but do on Linux).

+ DataDriven TCs for identifying which separate case failed.
+ appveyor: rework matrix, conda3.4 cannot install in develop mode

+ CAUSE: In Windows, Diffs freeze while reading Popen streams,
probably buffers smaller; good-thin(TM) in this case because reading a
Popen-proc from the launching-thread freezes GIL.  The alternative to
use `proc.communicate()` also relies on big buffers.
+ SOLUTION: Use `cmd.handle_process_output()` to consume Diff-proc
streams.
+ Retroffited `handle_process_output()` code to support also
byte-streams, both Threading(Windows) and Select/Poll (Posix) paths
updated.

- TODO: Unfortunately, `Diff._index_from_patch_format()` still slurps
input; need to re-phrase header-regexes linewise to resolve it.

+ HookException thrown on Popen, and were missed on Windows.
+ No SHELL on Popen??
+ Minor fixes:
  + Try harder to delete trees - no remorses.
  + Simplify exception reprs.
  + Unittest-ize test_index assertions.

+ When `universal_lines==True` (515a6b9) must tel
`handle_process_output` to stop decoding strings.

+ No WindowsError exception.
+ Add `test_exc.py` for unicode issues.
+ Single-arg for decoding-streams in pump-func.

+ Unicode PY2/3 issues fixed also in pump stream func.

+ Cannot `index.path` into ENV, it is bytes!
+ The hook TC never runs on linux!
+ Unblock removal of odbfile in perf-large streams TC.
+ Attempt to unblock removal of submodule file by intensive cleaning.

more unblock files

+ Collect all known commands

+ Modify lock/read-config-file code to ansure files closed
+ Use `with GitConfigarser()` more systematically in TCs.
+ Clear any locks left hanging from pev Tcs

+ Extract util-method to delete lock-files, also on Windows (will be
needed by TCs).

+ Modify lock/read-config-file code to ensure files closed.
+ Use `with GitConfigarser()` more systematically in TCs.
+ Clear any locks left hanging from prev Tcs.
+ Util: mark lock-files as SHORT_LIVED; save some SSDs...

+ FIX TestRepo.test_submodule_update():
  + submod: del `.git` file prior overwrite; Windows denied otherwise!
+ FIX TestRepo.test_untracked_files():
  + In the `git add <file>` case, it failed with unicode args on PY2.
Had to
encode them with `locale.getpreferredencoding()` AND use SHELL.
+ cmd: add `shell` into `execute()` kwds, for overriding USE_SHELL per
command.
+ repo: replace blocky `communicate()` in `_clone()` with thread-pumps.
+ test_repo.py: unittestize (almost  all) assertions.
+ Replace open --> with open for index (base and TC).
+ test_index.py: Enabled a dormant assertion.

+ Some cases had restructuring of code.