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/tzdata/template

@@ -0,0 +1,22 @@
+# Template build file for 'tzdata'.
+pkgname=tzdata
+wrksrc=${pkgname}
+version=2009r
+distfiles="
+ftp://elsie.nci.nih.gov/pub/${pkgname}${version}.tar.gz
+ftp://elsie.nci.nih.gov/pub/tzcode${version}.tar.gz"
+build_style=gnu_makefile
+short_desc="Time zone and daylight-saving time data"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum="
+684d23e3ebe825c9db90732534446f4e33f5ad4455980b15fd9eb2e4ba5a6731
+49031541192a109fd9beddd07695cecf5ec90d09088c59b1d917c91f8f6081b2"
+long_desc="
+ This package contains data required for the implementation of standard
+ local time for many representative locations around the globe. It is
+ updated periodically to reflect changes made by political bodies to time
+ zone boundaries, UTC offsets, and daylight-saving rules."
+
+Add_dependency full glibc
+Add_dependency full bash
+Add_dependency full gawk