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/diffutils/template

@@ -0,0 +1,16 @@
+# Template file for 'diffutils'
+pkgname=diffutils
+version=2.8.1
+distfiles="http://ftp.gnu.org/gnu/$pkgname/$pkgname-$version.tar.gz"
+build_style=gnu_configure
+short_desc="The GNU diff utilities"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=c5001748b069224dd98bf1bb9ee877321c7de8b332c8aad5af3e2a7372d23f5a
+long_desc="
+ Diffutils contains the GNU diff, diff3, sdiff, and cmp utilities. Their
+ features are a superset of the Unix features and they are significantly
+ faster. Cmp has been moved into this package from the GNU textutils package.
+ These programs are usually used for creating patch files."
+
+base_chroot=yes
+Add_dependency run glibc