Fix corner case of RelativeLayout with pinned edges

LayoutParams without a specified layout_width value automatically
get a default of 0. This works in most cases, when the view is pinned by
various constraints (such as alignParentLeft and alignParentRight),
but breaks down when the child lies in negative coordinates.

Negative coordinates are supposed to be a signal, in RelativeLayout, that
that coordinate is variable. However, negative margins can cause a negative
value to be calculated, at which point it should be used as a concrete value,
not a behavior trigger.

The fix is to use Integer.MIN_VALUe as the tirgger instead, to distinguish that
impossible value from negative values which could reasonably have been computed
during measurement.

Also, removes dead code from earlier attempt at rtl.

Issue #10606777 Time picker can't display 10, 11, or 12 oclock when font size is huge
Issue #16516577 resolveLayoutDirection doesn't act as intended

Change-Id: Ia564603012f3c45636e69cd3776205fb544fda48