docker-exec man page is not created.

docker-exec.md needs to be renamed in order to build man page.
Should be docker-exec.1.md

Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)
Documenting Container Tty resize api

Addresses #7840

Signed-off-by: Srini Brahmaroutu <srbrahma@us.ibm.com>
Fix #8259 - Can't reuse symlink'd bindmount

volumes.Get was not checking for symlinked paths meanwhile when adding a
new volume it was following the symlink.
So when trying to use a bind-mount that is a symlink, the volume is
added with the correct path, but when another container tries to use the
same volume it got a "Volume exists" error because volumes.Get returned
nil and as such attempted to create a new volume.

Docker-DCO-1.1-Signed-off-by: Brian Goff <cpuguy83@gmail.com> (github: cpuguy83)
Merge pull request #8260 from cpuguy83/8259_fix_bindmount_symlink_reuse

Fix #8259 - Can't reuse symlink'd bindmount
Move the body of go_compile_test_dir into a file since GNU Parallel breaks on sourcing exported Bash functions thanks to the shellshock fixes

Signed-off-by: Andrew Page <admwiggin@gmail.com>
Merge pull request #8255 from rhatdan/execman

docker-exec man page is not created.
Merge pull request #8246 from brahmaroutu/doc_resize_tty_7840

Documenting Container Tty resize api
Merge pull request #8274 from tianon/parallel-shellshock

Move the body of go_compile_test_dir into a file since GNU Parallel breaks on sourcing exported Bash functions thanks to the shellshock fixes