[Ohrrpgce] SVN: teeemcee/9589 Implement Layout slices. Lays out children in rows.

[subversion at HamsterRepublic.com]

teeemcee
2017-10-18 21:03:43 -0700 (Wed, 18 Oct 2017)
497
Implement Layout slices. Lays out children in rows.

They're currently only available in privileged sliceedit mode.

The following aren't done yet:
-layout slices set to cover children
-I want to add at least one other layout mode, to stack children
 tightly instead of putting them in rows
-Children set to Fill Parent aren't handled
-Might be some changes in where RefreshChildren gets called from

There's an example slice collection.
I changed some of the parenting of slices in gamepad.slice.
---
U   wip/gamepad.slice
A   wip/ohrhelp/sliceedit_layout_cell_alignment.txt
A   wip/ohrhelp/sliceedit_layout_justified.txt
A   wip/ohrhelp/sliceedit_layout_min_row_breadth.txt
A   wip/ohrhelp/sliceedit_layout_primary_dir.txt
A   wip/ohrhelp/sliceedit_layout_primary_padding.txt
A   wip/ohrhelp/sliceedit_layout_row_alignment.txt
A   wip/ohrhelp/sliceedit_layout_secondary_dir.txt
A   wip/ohrhelp/sliceedit_layout_secondary_padding.txt
A   wip/ohrhelp/sliceedit_layout_skip_hidden.txt
U   wip/ohrhelp/sliceedit_slicetype.txt
U   wip/sliceedit.bas
U   wip/slices.bas
U   wip/slices.bi
A   wip/testgame/layout_example.slice