Fixed copy paste error for the installation section

Closes #353

See merge request !150

Changed "Installing into a command shell" to say section 3
("Installation & Setup") instead.  This resolves issue #353

Fixes issue #355 reported by Andre

e.g. foodfite.com will match FOODFITE.COM or FoodFite.COM

(the MD5 sum is insuring it's the right file anyway).

Inspired by jsdoor's equivalent change.

For DesotoFireflite (VALHALLA)

List header fix for personal email

See merge request !149

Fix for no group information available when displaying the sub-board header above the message list when listing personal email

This makes the view instant message logic more easily accessible from other
places (e.g. menus or whatever).

Add (V)iew command the private message (^P) prompt while we're at it.
Users don't normally discover ;string commands on their own.

DD message reader: Fixed score display and related colors in the message list for wide terminals

See merge request !148

Removed spaces from some filenames of Digital Distortion mods that had them

See merge request !147

Thank you Andre!

Fixed message list time colors for wide terminals (above 80 columns)

Closes #351

See merge request !146

genwrap.c(855): warning C4244: '=': conversion from 'LONGLONG' to 'uint32_t', possible loss of data

BCC error filewrap.h 77: Multiple declaration for 'mode_t'

Introduced in commit 898175e2

Remove cryptlib's -march=native to avoid SIGILL on x86_64 systems, where SBBS...

Closes #324

See merge request !144

Not sure why this isn't defined from inttypes.h, but blah.

- InternetMailReceived
- InternetMailForwarded
- FidoNetMailReceived
- WithAttachment
- FidoEchoMailReceived

The first string (suppressed with %.0s) is an optional date/time stamp.

- InternetMailReceived
- InternetMailForwarded
- FidoNetMailReceived
- WithAttachment
- FidoEchoMailReceived

For The Millionaire, closing issue #254

The first string (suppressed with %.0s) is an optional date/time stamp.

This also deprecates (removes support for) the [mail] NewMailNotice and ForwardNotice keys from sbbs.ini.

DDMsgReader v1.45: Fixed message scanning & searching issues introduced in the previous version.

Closes #344

See merge request !145

Remove cryptlib's -march=native to avoid SIGILL on x86_64 systems, where SBBS is compiled on a differnt host to where it is run.

This should fix issue #324