main/glew: upgrade to 1.5.8

main/glew/APKBUILD

 # Contributor: Carlo Landmeter
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=glew
-pkgver=1.5.7
-pkgrel=1
+pkgver=1.5.8
+pkgrel=0
 pkgdesc="A cross-platform C/C++ extension loading library"
 url="http://glew.sourceforge.net"
 arch="all"
@@ -31,4 +31,4 @@ package() {
 	install -D -m644 LICENSE.txt "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
 }
 
-md5sums="f913ce9dbde4cd250b932731b3534ded  glew-1.5.7.tgz"
+md5sums="342c8dc64fb9daa6af245b132e086bdd  glew-1.5.8.tgz"