community/dar: upgrade to 2.7.7

> from 2.7.6 to 2.7.7
> - added support for sequential reading more of sliced backup, to
>   accommodate tape support used with slices (at the opposite of dar_split)
> - fixing few typos in doc
> - making libdar more tolerant when calls to fadvise fail

-- https://sourceforge.net/p/dar/mailman/message/37690727/

community/dar/APKBUILD

 # Maintainer: Simon Rupf <simon@rupf.net>
 pkgname=dar
-pkgver=2.7.6
+pkgver=2.7.7
 pkgrel=0
 pkgdesc="Disk ARchive"
 url="http://dar.linux.free.fr/"
@@ -27,5 +27,5 @@ package() {
 	make DESTDIR="$pkgdir" install
 }
 sha512sums="
-517fa06a5b8caa53ad111e4287446583f328ee2027169db067610877e05291e63179c1bdd92312a6885d1c7eba0566a86301e974d1d48df56f0fce9ccfdb3a19  dar-2.7.6.tar.gz
+984328cff1ed3338707858aced83a6a18e950581f02dd686a2a01668f6c374d0af2d98ba49068a61624641fcfbb139ae893d02e5b5f303b8b26d8e05fcb6a229  dar-2.7.7.tar.gz
 "