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/less/template

@@ -0,0 +1,18 @@
+# Template file for 'less'
+pkgname=less
+version=436
+distfiles="http://www.greenwoodsoftware.com/less/less-$version.tar.gz"
+build_style=gnu_configure
+short_desc="Pager program similar to more(1)"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=57a16ff07431a9af45cf1cd5b374e1066d019304219f0d156e22bb8c4d6734d2
+long_desc="
+ Less is a program similar to more(1), but which allows backward
+ movement in the file as well as forward movement.  Also, less does not
+ have to read the entire input file before starting, so with large input
+ files it starts up faster than text editors like vi(1).  Less uses
+ termcap (or terminfo on some systems), so it can run on a variety of
+ terminals.  There is even limited support for hardcopy terminals."
+
+Add_dependency full glibc
+Add_dependency full ncurses