Revert "Quick and dirty fix to get CRLF support in edit_line promises on Win."

This reverts commit 9ca10d35190a646cc6f4f4ff43a4ec79468b9a10.
Improved error messages when chdir fails.
Move Windows specific initialization to enterprise.
Also test for crash in readtcp_connection_fail acceptance test.
Redmine #4733: Make edit_line CRLF aware.

This detects the newline mode before an edit begins, remembers it and
applies the same newline mode when the file is saved.

In many places where we know we are reading text files, we now switch
to opening in text mode on Windows, which is safe even if the file has
LF endings (either line ending will return LF in memory). On Unix it
has no effect.

For files contained within the /var/cfengine tree, I generally stick
to using binary mode, even for text files, since it lowers the risk,
and they don't generally need to be CRLF format anyway.
Silence a warning about unused argument.
Fix Windows registry test.

"ProgramFilesDir" is the correct name, not "ProgramFiles". Verified on
Windows 2008 and 2012.
Merge pull request #1572 from kacfengine/crlf_in_editing

Redmine #4733: Make edit_line CRLF aware + plus minor stuff