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/squashfs-tools/template

@@ -0,0 +1,28 @@
+# Template file for 'squashfs-tools'
+pkgname=squashfs-tools
+version=4.0
+wrksrc="squashfs${version}/squashfs-tools"
+distfiles="${SOURCEFORGE_SITE}/squashfs/squashfs${version}.tar.gz"
+build_style=gnu_makefile
+make_install_args="INSTALL_DIR=$XBPS_DESTDIR/$pkgname-$version/usr/bin"
+short_desc="Highly compressed read-only filesystem (tools)"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=18948edbe06bac2c4307eea99bfb962643e4b82e5b7edd541b4d743748e12e21
+long_desc="
+ Squashfs is a highly compressed read-only filesystem for Linux. It uses zlib
+ compression to compress both files, inodes and directories. Inodes in the
+ system are very small and all blocks are packed to minimise data overhead.
+ Block sizes greater than 4K are supported up to a maximum of 64K.
+
+ Squashfs is intended for general read-only filesystem use, for archival
+ use (i.e. in cases where a .tar.gz file may be used), and in constrained
+ block device/memory systems (e.g. embedded systems) where low overhead is
+ needed."
+
+Add_dependency full glibc
+Add_dependency full zlib
+
+post_install()
+{
+	wrksrc=$XBPS_BUILDDIR/squashfs${version}
+}