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/lzo/template

@@ -0,0 +1,23 @@
+# Template build file for 'lzo'.
+pkgname=lzo
+version=2.03
+distfiles="http://www.oberhumer.com/opensource/lzo/download/lzo-$version.tar.gz"
+build_style=gnu_configure
+configure_args="--enable-shared=yes"
+short_desc="Portable lossless data compression library"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=8b1b0da8f757b9ac318e1c15a0eac8bdb56ca902a2dd25beda06c0f265f22591
+long_desc="
+ LZO is a portable lossless data compression library written in ANSI
+ C. It offers pretty fast compression and very fast decompression.
+ Decompression requires no memory.
+
+ In addition there are slower compression levels achieving a quite
+ competitive compression ratio while still decompressing at this
+ very high speed.
+
+ The LZO algorithms and implementations are copyrighted OpenSource
+ distributed under the GNU General Public License."
+
+subpackages="$pkgname-devel"
+Add_dependency full glibc