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/xfwm4/template

@@ -0,0 +1,25 @@
+# Template file for 'xfwm4'
+pkgname=xfwm4
+version=4.6.1
+distfiles="http://mocha.xfce.org/archive/xfce-$version/src/$pkgname-$version.tar.bz2"
+build_style=gnu_configure
+configure_args="--enable-compositor --enable-xsync"
+short_desc="Next generation window manager for Xfce"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=0a808d19a7ddf1f5271d0b7009a5d0dc919562a85afab4071df060f51e9ee9ed
+long_desc="
+ xfwm4 is a window manager compatible with GNOME, GNOME2, KDE2,
+ KDE3 and Xfce."
+
+gtk_iconcache_dirs="/usr/share/icons/hicolor"
+triggers="gtk-icon-cache"
+ 
+Add_dependency build pkg-config
+Add_dependency build intltool
+Add_dependency build flex
+Add_dependency full glibc
+Add_dependency full gtk+
+Add_dependency full dbus-glib
+Add_dependency full libxfcegui4
+Add_dependency full hicolor-icon-theme
+Add_dependency full desktop-file-utils