Support Alt-b (build floor bars) generically

[joelpt]

Original author: [email protected] (May 23, 2010 21:20:33)

Convert value "Alt-b" in a cell to 3:b where b is any key. Shift- and Ctrl-
should also be supported for completeness. Not sure what #:s correspond tho.

Original issue: http://code.google.com/p/quickfort/issues/detail?id=10

[joelpt]

From [email protected] on April 23, 2011 16:06:07
! has been reclaimed from use as {Enter} shortcut. Will use syntax !B for Alt-B. Can also use ^B for Ctrl-B and +B for Shift-B.

Fixing this issue requires modifying the macro keystroker logic to translate !B into B:2 syntax used in DF interface.txt