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/zisofs-tools/template

@@ -0,0 +1,19 @@
+# Template file for 'zisofs-tools'
+pkgname=zisofs-tools
+version=1.0.8
+distfiles="${KERNEL_SITE}/utils/fs/zisofs/$pkgname-$version.tar.bz2"
+build_style=gnu_configure
+make_install_args="INSTALLROOT=$XBPS_DESTDIR/$pkgname-$version"
+short_desc="ISO9660 transparent compression tool"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=ae4e53e4914934d41660248fb59d3c8761f1f1fd180d5ec993c17ddb3afd04f3
+long_desc="
+ zisofs is an extension to the ISO 9660 file system that adds transparent
+ compression support. The file system is supported by versions 2.4.14 and
+ later of the Linux kernel.
+
+ Non-compressed files on a zisofs file system are still accessible by legacy
+ systems."
+
+Add_dependency full glibc
+Add_dependency full zlib