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/valgrind/template

@@ -4,7 +4,6 @@ sourcepkg=$pkgname
 version=3.4.1
 distfiles="http://www.valgrind.org/downloads/$pkgname-$version.tar.bz2"
 build_style=gnu_configure
-make_install_target="DESTDIR=$XBPS_DESTDIR/$pkgname-$version install"
 short_desc="Tool for finding memory management bugs in programs"
 maintainer="Juan RP <xtraeme@gmail.com>"
 checksum=669ee7aab8a3a905520159b6d7be35d3911e1a4d7a67d90dc1c12c00693184a9