Major infrastructure changes, part 2.

* Moved helpers, common and triggers dirs into xbps-src, where
  they belong.
* Renamed the templates dir to srcpkgs, it was so redundant before.
* Make it possible to add subpkgs with no restriction in names, for
  example udev now has a subpkgs called "libgudev". Previously
  subpkgs were named "${sourcepkg}-${pkgname}".
* xbps-src: changed to look for template files in current directory.
  That means that most arguments from the targets have been removed.
* xbps-src: added a reinstall target, to remove + install.
* xbps-src: do not overwrite binpkgs by default, skip them.

And more that I forgot because it's a mega-commit that I've been
working for some days already...

--HG--
extra : convert_revision : 0f466878584d1e6895d2a234f07ea1b2d1e61b3e

srcpkgs/man-pages/template

@@ -0,0 +1,33 @@
+# Template file for 'man-pages'
+pkgname=man-pages
+version=3.23
+distfiles="${KERNEL_SITE}/docs/manpages/Archive/$pkgname-$version.tar.bz2"
+build_style=only-install
+make_install_target="all prefix=$XBPS_DESTDIR/$pkgname-$version/usr"
+short_desc="Linux Documentation Project manual pages"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=74db52ca786330996e8454e4020402bc5b981801855181e19062a57bf3190a37
+long_desc="
+ The Linux Documentation Project (LDP) manual pages."
+
+noarch=yes
+
+post_install()
+{
+	# Remove dup manpages.
+	cd ${DESTDIR}/usr/share/man
+	# From coreutils
+	rm -f man1/groups.1
+	# From shadow.
+	rm -f man5/passwd.5
+	rm -f man3/getspnam.3
+	# From xf86-input-mouse.
+	rm -f man4/mouse.4
+	# From tzdata.
+	rm -f man5/tzfile.5
+	rm -f man8/zdump.8
+	rm -f man8/tzselect.8
+	rm -f man8/zic.8
+	# From attr-devel.
+	rm -f man2/*xattr.2
+}