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/libxslt/template

@@ -0,0 +1,20 @@
+# Template build file for 'libxslt'.
+pkgname=libxslt
+version=1.1.26
+distfiles="ftp://xmlsoft.org/libxslt/$pkgname-$version.tar.gz"
+build_style=gnu_configure
+short_desc="XSLT parser library from the GNOME project"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=55dd52b42861f8a02989d701ef716d6280bfa02971e967c285016f99c66e3db1
+long_desc="
+ Libxslt is the XSLT C library developed for the Gnome project. XSLT itself is
+ an XML language to define transformation for XML. Libxslt is based on libxml2
+ the XML C library developed for the Gnome project. It also implements most of
+ the EXSLT set of extensions functions and some of Saxon's evaluate and
+ expressions extensions."
+
+subpackages="$pkgname-devel $pkgname-python"
+Add_dependency full glibc
+Add_dependency full libxml2
+Add_dependency full libgcrypt
+Add_dependency build python