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/autoconf/template

@@ -0,0 +1,23 @@
+# Template build file for 'autoconf'.
+pkgname=autoconf
+version=2.64
+distfiles="http://ftp.gnu.org/gnu/autoconf/$pkgname-$version.tar.gz"
+build_style=gnu_configure
+short_desc="Generates automatic source code configuration scripts"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=a84471733f86ac2c1240a6d28b705b05a6b79c3cca8835c3712efbdf813c5eb6
+long_desc="
+ Autoconf is an extensible package of m4 macros that produce shell
+ scripts to automatically configure software source code packages.
+ These scripts can adapt the packages to many kinds of UNIX-like
+ systems without manual user intervention.  Autoconf creates a
+ configuration script for a package from a template file that lists the
+ operating system features that the package can use, in the form of m4
+ macro calls."
+
+noarch=yes
+Add_dependency full gawk
+Add_dependency full diffutils
+Add_dependency full m4
+Add_dependency full perl
+Add_dependency build texinfo