Add gawk-3.0.4.

sysa/gawk-3.0.4/gawk-3.0.4.sh

@@ -0,0 +1,18 @@
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_prepare() {
+    default_src_prepare
+    rm awktab.c
+}
+
+src_install() {
+    default_src_install
+
+    # Install data files
+    install -d "${PREFIX}/share/awk/"
+    for file in awklib/eg/lib/*.awk; do
+        install -m 644 "$file" "${PREFIX}/share/awk/"
+    done
+}