supertux: update to 0.5.1

supertux/PKGBUILD

@@ -1,19 +1,22 @@
 pkgname=supertux
-pkgver=0.5.0
+pkgver=0.5.1
 pkgrel=1
 pkgdesc="A classic 2D jump'n run sidescroller game in a style similar to the original SuperMario games"
 arch=('x86_64')
 url="http://super-tux.sourceforge.net/"
 license=('GPL')
-depends=('sdl2_image' 'curl' 'physfs' 'openal' 'libvorbis' 'glew')
+depends=('sdl2_image' 'curl' 'openal' 'libvorbis' 'glew')
 makedepends=('cmake' 'boost' 'mesa' 'optipng' 'git')
 source=(https://github.com/SuperTux/$pkgname/releases/download/v${pkgver}/SuperTux-v${pkgver}-Source.tar.gz)
-md5sums=('3bb7c1f3f622da79ec9fe1ebc521f286')
+sha1sums=('f2a40ed73ca81951e17e23edc914e2ed480f9ca1')
 
 build() {
   cd "SuperTux-v${pkgver}-Source"
 
-  cmake -D CMAKE_INSTALL_PREFIX=/usr -D INSTALL_SUBDIR_BIN=bin .
+  cmake \
+  -DCMAKE_INSTALL_PREFIX=/usr \
+  -DINSTALL_SUBDIR_BIN=bin \
+  -DUSE_SYSTEM_PHYSFS=0
   make
 }