check that shaders list is not null
(it is null on js target for some objects)
initialize lineSpacing var
(in js target in was undefined that caused error in computing text height)
Merge pull request #78 from darkdarkdragon/js_fixes

Js fixes
Merge remote-tracking branch 'upstream/master'
make rgba in css color definition comply with standart
Merge pull request #79 from darkdarkdragon/rgba_fix

make rgba in css color definition comply with standart
added support for border-radius property in css
border-radius sample
Merge pull request #80 from darkdarkdragon/border_radius

Border radius
added frame based UV animation
make sure the normal is always renormalized in fragment shader after its interpolation
bugfix
fixes for format 3.1.1 / agal2
fix for border-radius on semi-transparent fills
added PathFind
Merge pull request #81 from darkdarkdragon/border_radius_fix

fix for border-radius on semi-transparent fills
added @shared params and precision qualifiers
added AnimatedTexture shader
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into multistaged