Do these give a boost of 1 strength and 1 dexterity to the form max or are they simply like wearing an item that is +1 str or dex?

Like a +1 dex item.

Lirad's edges:
http://forums.carrionfields.com/dc/dcboard.php?az=show_mesg&forum=31&topic_id=29510&mesg_id=29513&page=33

Stock Rhino:
http://wiki.qhcf.net/index.php?title=Offensive_Forms#Rhinoceros

My Rhino 8 hours before deletion:
civilized <989hp 903m 697mv 21600tnl (-30.91%)> sc
Lirad the Grand Master of Changelings
-------------------------------------------------------------------------------
Level : 51 Sex : male Form : rhinoceros
Ethos : Chaotic Align : Evil Class : shapeshifter
Practices: 3 Trains : 0 Hometown : Arkham
Exp : 438900 To Level : 21600 Sphere : Knowledge
Age : middle-aged, 53 years old (238 hours)
Hit Point: 989 /989 Mana : 903 /1188 Move : 697 /891
Str : 24(24) Int : 15(15) Wis : 15(15)
Dex : 14(14) Con : 23(23) Chr : 18(18)
Wimpy : 100 hp Morale : Moderate Position : Standing
Hitroll : 45(45 ) Damroll : 53(53 )
AC pierce : -430 Divinely armored AC bash : -430 Divinely armored
AC slash : -430 Divinely armored AC magic : -430 Divinely armored
AC element: -430 Divinely armored
vs Spell : Somewhat protected vs Paralysis: Well protected
vs Breath: Barely protected vs Mental: Not protected
-------------------------------------------------------------------------------
Summon : You can only be summoned by players within PK range.
Corpseguard: You attempt to guard corpses from lower level looters.
Rescue : You allow others to rescue you.
Give : You allow things to be given to you.
Trust : You trust your group with questionable spells/supplications.
Follow : You do not welcome followers.
You feel nearly full.
-------------------------------------------------------------------------------
You are affected by:
Spell: 'detect invis' for 46 hours.
Spell: 'haste' modifies dexterity by 4 for 26 hours.
Spell: 'unstable mutation' for 2 hours.
Spell: 'shield' modifies armor class by -30 for 11 hours.
Spell: 'pass door' for 10 hours.
Spell: 'barrier' modifies armor class by -80 for 9 hours.
Spell: 'fly' for 7 hours.
Spell: 'stone skin' modifies armor class by -40 for 2 hours.
Spell: 'aura' modifies armor class by -30 for 13 hours.
Timer: 'scales of the dragon' for 8 hours.
Spell: 'control translucence' for 1 hours.
Physical effect: 'form bonus' modifies constitution by 3 for -1 hours.
Physical effect: 'form bonus' modifies dexterity by 1 for -1 hours.