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/valgrind/template

@@ -0,0 +1,18 @@
+# Template file for 'valgrind'
+pkgname=valgrind
+version=3.5.0
+distfiles="http://www.valgrind.org/downloads/$pkgname-$version.tar.bz2"
+build_style=gnu_configure
+short_desc="Tool for finding memory management bugs in programs"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=743a5132bbebc247169aefae6e17657677fdf0961aba1668dd4ee7028d27ba80
+long_desc="
+ Valgrind is a tool to help you find memory-management problems in your
+ programs. When a program is run under Valgrind's supervision, all
+ reads and writes of memory are checked, and calls to
+ malloc/new/free/delete are intercepted. As a result, Valgrind can
+ detect a lot of problems that are otherwise very hard to find/diagnose."
+
+subpackages="$pkgname-devel"
+Add_dependency full glibc
+Add_dependency full perl