Several fixes to libsvgtiny recipe
Several fixes to libsvgtiny recipe

* Use actual release download
* Use patchset
* Declare dependency on pkg-config

miqlas/haikuports,moochris/haikuports,haikuports/haikuports,koletzky/haikuports,nielx/haikuports,miqlas/haikuports,haikuports/haikuports,moochris/haikuports,Begasus/haikuports,haikuports/haikuports,Begasus/haikuports,moochris/haikuports,Begasus/haikuports,nielx/haikuports,haikuports/haikuports,miqlas/haikuports,Begasus/haikuports,haikuports/haikuports,koletzky/haikuports,nielx/haikuports,Begasus/haikuports,koletzky/haikuports