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/kernel-libc-headers/template

@@ -0,0 +1,24 @@
+# Template file for 'kernel-libc-headers'
+pkgname=kernel-libc-headers
+_kernel_ver=2.6.31
+_kernel_patch_ver=6
+version=${_kernel_ver}.${_kernel_patch_ver}
+wrksrc="linux-$version"
+distfiles="${KERNEL_SITE}/kernel/v2.6/linux-$version.tar.bz2"
+build_style=only-install
+make_install_target="
+ INSTALL_HDR_PATH=$XBPS_DESTDIR/$pkgname-$version/usr
+ headers_install"
+short_desc="The Linux kernel headers for development"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=7751de380eab755a647c7137949bc6207fd14379e5e8e5c15c421fdc8390c45e
+long_desc="
+ This package provides the linux kernel headers for use in userspace."
+
+base_chroot=yes
+
+post_install()
+{
+	# Remove /usr/include/drm bundled with libdrm.
+	rm -rf ${DESTDIR}/usr/include/drm
+}