[PATCH v2 0/6] Run test suite without dashed commands in PATH

This patch series runs the test suite without the dashed commands
in the PATH.

Changes since version 1:

  - Added patch 3 that documents the pre-existing GIT_TEST_INSTALLED
    feature.

  - Rename what used to be "test-bin" directory as "bin-wrappers", to
    more clearly describe what it is.

  - Split off patch 6 (INSTALL documention) from patch
    4 (was patch 3), describing how the bin-wrappers directory
    is a very convenient way to manually test an uninstalled build.
    I also reworded it a bit to mention the downsides.  Junio
    doesn't seem to agree this is useful; splitting it off makes
    it easy to leave it out.

Not changed:

There was some discussion about not building the bin-wrappers directory
unless you are actually running tests.  But I don't really think it
is worth the additional complexity to manage this.  The "make all"
target is already building several full-up binaries to support the
test suite (not just the small sed-ed scripts that this adds).  And any
such solution would need to deal with parallel execution locking
issues, as well as additional uglyness (either duplicating a list
of bindir executables within test-lib.sh itself, or calling into a
parent directory makefile that might already be running in
a grandparent process).

Matthew Ogilvie (6):
  t2300: use documented technique to invoke git-sh-setup
  t3409 t4107 t7406: use dashless commands
  t/README: Document GIT_TEST_INSTALLED and GIT_TEST_EXEC_PATH
  build dashless "bin-wrappers" directory similar to installed bindir
  run test suite without dashed git-commands in PATH
  INSTALL: document a simpler way to run uninstalled builds

 .gitignore                         |    1 +
 INSTALL                            |   11 +++++++-
 Makefile                           |   49 ++++++++++++++++++++++++++---------
 t/README                           |   21 +++++++++++++++
 t/t2300-cd-to-toplevel.sh          |    2 +-
 t/t3409-rebase-preserve-merges.sh  |    6 ++--
 t/t4107-apply-ignore-whitespace.sh |   20 +++++++-------
 t/t7406-submodule-update.sh        |    4 +-
 t/test-lib.sh                      |   33 +++++++++++++++---------
 wrap-for-bin.sh                    |   15 +++++++++++
 10 files changed, 120 insertions(+), 42 deletions(-)
 create mode 100644 wrap-for-bin.sh