[PATCH (GIT-GUI,MINGW) 0/3] Fix OpenSSH & Git-Gui integration in msysgit

It is a well known problem on msysgit that when ssh is started from git-gui during a fetch, any situations where it normally displays a prompt to the user cause it to hang silently. It is even worse than the situation on Linux, where the prompts appear on the terminal that started the GUI.

This combination of 3 patches aims to eliminate this problem. One of them changes a flag that is used to spawn the ssh executable, to make it recognize that it does not have a valid controlling console. The other two add features to git-gui that make ssh usage more convenient, including a simple implementation of an SSH_ASKPASS program.

When the patches are applied, all SSH prompts in msysgit appear in a GUI dialog box in the middle of the screen. Additionally, it is possible to view or create an OpenSSH key pair directly from git-gui.

Note: This was already posted to the msysgit list. The only differences
      are that git-gui now sets a more evidently fake value for DISPLAY,
      and the last patch has been acked.

GIT-GUI:

	git-gui: Add a dialog that shows the OpenSSH public key.
	---
	 git-gui.sh     |    4 ++
	 lib/sshkey.tcl |  126 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
	 2 files changed, 130 insertions(+), 0 deletions(-)
	 create mode 100644 lib/sshkey.tcl

	git-gui: Add a simple implementation of SSH_ASKPASS.
	---
	 Makefile         |    2 ++
	 git-gui.sh       |   12 ++++++++++++
	 git-gui--askpass |   59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
	 3 files changed, 73 insertions(+), 0 deletions(-)
	 create mode 100755 git-gui--askpass

CORE(MINGW):

	Windows: Make OpenSSH properly detect tty detachment.
	---
	 compat/mingw.c |    8 ++++++--
	 1 files changed, 6 insertions(+), 2 deletions(-)