8.1.0 beta fails to parse files without empty line before From: header

[Jonathan Underwood]

Reported downstream:

https://bugzilla.redhat.com/show_bug.cgi?id=556579

M version 8.1.0 does not work properly with old mail files whenever there is
no empty line before the "From" header. Whenever this happens, the second mail
is concatenated to the body of the first.

Version-Release number of selected component (if applicable):
emacs-vm-8.1.0-0.1.beta.fc12.i686

How reproducible:
Always

Steps to Reproduce:
Open old mail folder in which there are no empty lines before the "From"
headers

Actual results:
Folder appears to have fewer emails than it should, the emails with the above
missing empty line appear concatenated with the previous ones.

Expected results:
Folder opens as with emacs-vm-8.0.14-2

Additional info:

[Uday Reddy (reddyuday)]

Dear Jonathan,

I am surprised with this bug report because I don't see any changes in
the folder-type functionality since VM 8.0.x or even VM 7.19.

The user should set the variable `vm-default-From_-folder-type' to
`BellFrom_' in order to handle folders without trailing message
separators (two blank lines, I think).

It is a good idea to use the command vm-change-folder-type with
argument From_ to convert the old style folders.

I will add a note in the info file pointing this out.

Cheers,
Uday