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/gobject-introspection/template

@@ -0,0 +1,19 @@
+# Template file for 'gobject-introspection'
+pkgname=gobject-introspection
+version=0.6.5
+distfiles="${GNOME_SITE}/$pkgname/0.6/$pkgname-$version.tar.bz2"
+build_style=gnu_configure
+short_desc="Introspection system for GObject-based libraries"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=fe1702200d45958cdfe3707952d64c3a541628b1203a9b2644db0ee2c6d5df79
+long_desc="
+ The goal of the project is to describe the APIs and collect them in
+ a uniform, machine readable format."
+
+subpackages="$pkgname-devel"
+Add_dependency build pkg-config
+Add_dependency build flex
+Add_dependency full glibc
+Add_dependency full libffi
+Add_dependency full glib
+Add_dependency full python