[Ohrrpgce] SVN: james/2497 New commands "horiz flip sprite" "vert flip sprite",

[Ralph Versteegen]

2009/1/20  <subversion at hamsterrepublic.com>:
> james
> 2009-01-19 12:05:21 -0800 (Mon, 19 Jan 2009)
> 105
> New commands "horiz flip sprite" "vert flip sprite",
> "sprite is horiz flipped", "sprite is vert flipped"
> ---
> U   wip/docs/plotdict.xml
> U   wip/docs/plotdictionary.html
> U   wip/docs/update-html.sh
> U   wip/plotscr.hsd
> U   wip/testgame/collider.hss
> U   wip/testgame/collider.rpg
> U   wip/testgame/slicetest.hss
> U   wip/testgame/slicetest.rpg
> U   wip/whatsnew.txt
> U   wip/yetmore.bas

Just noticed that commands like "sprite is horiz flipped" and "get
rect border" only check that they are passed a valid splice handle,
but not whether that splice is the correct type, resulting in possible
sigsegv's. We probably should have valid_plotsprite(), etc.