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/xbps-casper/files/scripts/casper-bottom/10adduser

@@ -0,0 +1,30 @@
+#!/bin/sh
+
+PREREQ=""
+DESCRIPTION="Setting up live session user '$USERNAME'"
+
+. /scripts/casper-functions
+
+prereqs()
+{
+       echo "$PREREQ"
+}
+
+case $1 in
+# get pre-requisites
+prereqs)
+       prereqs
+       exit 0
+       ;;
+esac
+
+log_begin_msg "$DESCRIPTION"
+
+# U6aMy0wojraho is just a blank password
+chroot ${rootmnt} useradd -c "$USERFULLNAME" -m $USERNAME \
+	-G audio -p U6aMy0wojraho
+if [ -f ${rootmnt}/etc/sudoers ]; then
+	echo "${USERNAME}  ALL=(ALL) NOPASSWD: ALL" >> ${rootmnt}/etc/sudoers
+fi
+
+log_end_msg