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/xvinfo/template

@@ -0,0 +1,18 @@
+# Template build file for 'xvinfo'.
+pkgname=xvinfo
+version=1.1.0
+distfiles="${XORG_SITE}/app/$pkgname-$version.tar.bz2"
+build_style=gnu_configure
+short_desc="Query X-Video capabilities"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=0a318f6ca0d92bd5cc2ab9d2690f6120b3e1537b7902ce110469864869e86efb
+long_desc="
+ This package provides xvinfo, a program to query the capability of the
+ video adaptor accessible through the X-Video extension.
+
+ This is from the modular X.org X11 project."
+ 
+Add_dependency build pkg-config
+Add_dependency full glibc
+Add_dependency full libX11
+Add_dependency full libXv