net-mail/mailbase: do not hardcode application paths

as it obviously wont work for gentoo prefix project.
and review and revize the mailcap file while at it.

Bug: https://bugs.gentoo.org/761772
Package-Manager: Portage-3.0.12, Repoman-3.0.2
Signed-off-by: Eray Aslan <eras@gentoo.org>

net-mail/mailbase/files/mailcap-r1

@@ -0,0 +1,19 @@
+application/pdf; xdg-open '%s'; needsterminal
+application/postscript; xdg-open '%s'; needsterminal
+application/x-info; info --subnodes -o /dev/stdout -f '%s' 2>/dev/null; copiousoutput; description=GNU Info document
+application/x-gtar; tar tvzf -; print=tar tvzf - | print text/plain:-; copiousoutput
+application/x-tar; tar tvf -; print=tar tvf - | print text/plain:-; copiousoutput
+application/x-troff-man; nroff -mandoc -Tutf8; copiousoutput; print=nroff -mandoc -Tutf8 | print text/plain:-
+
+audio/*; xdg-open '%s'; needsterminal
+image/*; xdg-open '%s'; needsterminal
+
+text/html; lynx -dump '%s'; copiousoutput; description=HTML Text; nametemplate=%s.html
+text/troff; man -l '%s'; needsterminal; description=Man page
+text/*; less '%s'; needsterminal
+text/*; gview '%s'; edit=gvim -f '%s'; compose=gvim -f '%s'; test=test "$DISPLAY" != ""
+text/*; view '%s'; edit=vim '%s'; compose=vim '%s'; needsterminal
+text/*; more '%s'; needsterminal
+
+*/*; less '%s'; needsterminal
+*/*; false; print=lpr '%s'

net-mail/mailbase/mailbase-1.6.ebuild

@@ -0,0 +1,46 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+inherit pam
+
+DESCRIPTION="MTA layout package"
+SRC_URI=""
+HOMEPAGE="https://wiki.gentoo.org/wiki/No_homepage"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sparc ~x86"
+IUSE="pam"
+
+RDEPEND="
+	acct-group/mail
+	acct-user/mail
+	acct-user/postmaster
+	pam? ( sys-libs/pam )
+	!<net-mail/metamail-2.7.53.3-r2"
+
+S=${WORKDIR}
+
+src_install() {
+	dodir /etc/mail
+	insinto /etc/mail
+	doins "${FILESDIR}"/aliases
+	insinto /etc
+	newins "${FILESDIR}"/mailcap-r1 mailcap
+	doman "${FILESDIR}"/mailcap.5
+
+	dosym spool/mail /var/mail
+
+	newpamd "${FILESDIR}"/common-pamd-include pop
+	newpamd "${FILESDIR}"/common-pamd-include imap
+	if use pam ; then
+		local p
+		for p in pop3 pop3s pops ; do
+			dosym pop /etc/pam.d/${p}
+		done
+		for p in imap4 imap4s imaps ; do
+			dosym imap /etc/pam.d/${p}
+		done
+	fi
+}