Added support to detect when the current console font has glyphs
that are too wide and will cause rendering errors in the console.
If detected, we warn the user and change the code page to 437
and the font to Consolas. At exit, if we had changed the font
and code page then we will restore to the original font and code page.
Defined strbuf_t and related routines to support dynamically sized
strings. Modified strip_newline() to strip the last newline in a string
instead of the first.
Simplified splash window code using new strbuf_t.
Prior to exiting game, re-enable getreturn and call wait_synch() in
case there is buffered raw prints that must be displayed to user.
Black is a better choice given that the map background
will always be black. This also creates a better polished
experience when all window backgrounds are set to black.
Fix bug where permanent inventory window would go away after
any operation that used the inventory window to pick items. Since
we were hiding the permanent inventory window, this would also
leave a space filled with white, creating jarring visual if
using dark themed window backgrounds.
Bart House