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/coreutils/template

@@ -0,0 +1,27 @@
+# Template file for 'coreutils'
+pkgname=coreutils
+version=7.6
+distfiles="http://ftp.gnu.org/gnu/coreutils/$pkgname-$version.tar.gz"
+build_style=gnu_configure
+configure_args="--enable-install-program=hostname --bindir=/bin"
+short_desc="The GNU core utilities"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=1d9bfe8b427ca5f8cffa0b462f861e4157c946fbeaf0884d273bbd6cab1c25d4
+long_desc="
+ The GNU Core Utilities are the basic file, shell and text manipulation
+ utilities of the GNU operating system. These are the core utilities
+ which are expected to exist on every operating system."
+
+essential=yes
+Add_dependency run glibc
+Add_dependency full gmp
+Add_dependency full attr
+Add_dependency full acl
+Add_dependency build perl
+
+post_install()
+{
+	# Most programs expect /usr/bin/env.
+	install -d ${DESTDIR}/usr/bin
+	cd ${DESTDIR}/usr/bin && ln -s ../../bin/env .
+}