Added zsh

sources/zsh/zsh.spec

@@ -0,0 +1,18 @@
+# Maintainer: Alexander Hill
+SRC_HASH="9b8d1ecedd5b5e81fbf1918e876752a7dd948e05c1a0dba10ab863842d45acd5"
+SRC_NAME="zsh"
+SRC_URL="https://www.zsh.org/pub/zsh-5.9.tar.xz"
+SRC_VERSION="5.9"
+
+build() {
+    tar xf ../$SRC_FILENAME
+    cd zsh-$SRC_VERSION/
+    ./configure $TT_AUTOCONF_COMMON --enable-multibyte --enable-libc-musl
+    make -O -j $TT_PROCS
+}
+
+package() {
+    cd zsh-$SRC_VERSION/
+    make -O -j $TT_PROCS install DESTDIR=$TT_INSTALLDIR
+    ln -sf zsh $TT_INSTALLDIR/bin/bash
+}