new: migrated more packages

src/m4/.gitignore

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+.cache/
+dist/
+root/

src/m4/changes.md

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+# 1.4.19
+First version

src/m4/pkg.sh

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+# general info
+NAME="m4"
+DESC="Implementation of the traditional Unix macro processor"
+VERSION="1.4.19"
+
+# required files
+FILES=("https://ftp.gnu.org/gnu/m4/m4-${VERSION}.tar.xz")
+HASHES=("0d90823e1426f1da2fd872df0311298d")
+
+# install and build depends
+DEPENDS=("bash" "glibc")
+BUILD=()
+
+build(){
+  tar xf "${NAME}-${VERSION}.tar.xz"
+  cd "${NAME}-${VERSION}"
+
+  ./configure --prefix=/usr
+  make
+  make DESTDIR="${ROOTDIR}" install
+
+  cd .. && rm -r "${NAME}-${VERSION}"
+}