Within table cells the tab key moves to the next cell in the table, or creates
a new table row when at the end of the table.

After selection a word, line, or paragraph with multi click selection or using
the selection bar, then shift can be held and the arrows can be used to move
one of the ends of the selection.

Previously the calculations of dxStartIdent and dxOffset depended on
their order.

Fixes handling of buffer underruns that might still occur.

The CFLocale API can produce locale identifiers with modifiers, such as
"pl_PL@currency=EUR".  However, the Mac setlocale() can't understand such
locale strings.

The problem was that the paragraph format was being retrieved,
slightly modified and then used to set the paragraph format, without
limiting the mask to what was being set.  The PFM_OFFSETINDENT mask flag
being valid meant that dxStartIndent specifies a relative offset, thus
dxStartIndent was doubled.

winedbg: Don't force integral values while displaying a stack value, it doesn't work for float/double values.