Install all packages via DESTDIR var and not prefix.

This removes many assignments that were needed before, and fixes
some packages to install its manpage/info files.

--HG--
extra : convert_revision : 5422f921ef81d089ed95ce0c52e5106ea10b2165

templates/m4/template

@@ -4,7 +4,6 @@ version=1.4.12
 distfiles="http://ftp.gnu.org/gnu/m4/$pkgname-$version.tar.bz2"
 build_style=gnu_configure
 configure_args="--enable-changeword --enable-threads"
-make_install_target="DESTDIR=$XBPS_DESTDIR/$pkgname-$version install"
 short_desc="GNU version of UNIX m4 macro language processor"
 maintainer="Juan RP <xtraeme@gmail.com>"
 checksum=855217de304616931844f54bd00a1e03e92452f85de6caeec47b0e8244881ba3