* Add new build profile 'minimum', which defines a minimum set of
packages.
* Introduce HAIKU_BOOTSTRAP_SOURCES_PROFILE and let it default to
'@minimum-raw'. This can be overruled in UserBuildConfig, setting
it to '@release-raw' will cause all source packages required for a
full release to be put onto the bootstrap-image.
* Add new image HaikuImageMinimum, which is meant to define the minimum
useful Haiku image (yeah, I know that's vague).
* Add HAIKU_MINIMUM_BUILD, which indicates that HaikuImageMinimum should
be used (it would be better to merge this with HAIKU_BOOTSTRAP_BUILD
into something like HAIKU_BUILD_TYPE)
* Cleanup duplicate references to basic packages - those are now added
by the topmost Jamfile (no longer referenced by the build profiles).
* Fix adding WebPositive optional package.
* Fix adding wonderbrush package. Add it only for gcc2 to avoid a
warning by AddHaikuImagePackages.
* Simplify adding xz_utils package.
* find_directory() and hard-coded paths use /boot/system instead of
/boot/common.
* The build system creates the writable directories in /boot/system
instead of /boot/common.
* The build system no longer installs any packages in /boot/common.
The Haiku bootstrap image is now built with (hopefully) all required
primary and secondary architecture packages. The runtime loader is still
resisting our wish to run secondary architecture programs, though.
* Don't handle the bootstrap case in the main Jamfile. Add all bootstrap
packages to the image in the profile definition. That's less
confusing, hopefully.
* Add the missing bootstrap packages (ncurses*, libtool_libltdl). The
would normally be added in build_haiku_image when the package
dependencies are resolved, but we don't do that for the bootstrap
image, since we intentionally leave some dependencies out (e.g. perl)
because they can be built.
DefaultBuildProfiles is now included earlier (right after BuildSetup).
This allows us to set HAIKU_BOOTSTRAP_BUILD earlier, so it can be used
for the repository selection. The actual build profile definitions,
which cannot be done that early, live in the rule
DefineDefaultBuildProfiles, which is invoked where the file was
previously included.
