libroot_build & fs_shell: Provide _kern_ functions for readv/writev...

..instead of readv_pos/writev_pos. This way, we can be sure that we
are remapping them properly even under Haiku, as well as remove some
potential confusions.

bfs_shell seems to still work fine on a regular build.

build/kernel: Properly shadow syscall functions.

I didn't notice this in the previous commit because apparently GCC2
just links against libroot's versions of them. On GCC5, however,
the version from libroot_build was used even for calls from libroot itself,
which led to infinite loops and then stack overflows.

So instead we must have the "syscall" functions in libroot_build shadow
the real ones by being named differently, which I did by changing their
prefix from "_kern" to "_kernbuild" via preprocessor macros.

Since the build syscalls.h is now substantially different than the non-
build one (and has not been synchronized in nearly a decade anyway),
I've just stripped out all the syscall defns except for the ones actually used
in the build.

Thanks to kallisti5 for helping me debug and test.

partitioning: pass along reference to parent when uninitializing.

* Fixes problems with setting the partition name after uninitializing
a partition in DriveSetup. Previously, UninitializeJob() was
followed by SetStringJob(), but the kernel was updating the
change counter for the parent partition when uninitializing a
partition, leading to SetStringJob() having an incorrect change
counter for the parent partition. Now the parent change counter
will be correct when SetStringJob() runs.

Naive implementation of transfer_area(). It follows the suggested sematics
of the resolved ToDo, but could probably be made more efficient. Instead of
transfering the area, the area is cloned into the target teams' address space
and the original is deleted. This generates a new area_id for the transfered
area (as suggested by the ToDo). Updated syscall prototypes according to the
status_t to area_id return type change.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24320 a95241bf-73f2-0310-859d-f6bbb57e9c96

* fix the build of the libbe_test target


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22786 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added the disk device API to the libbe_haiku.so, so that libtracker.so builds
again for target libbe_test. Added respective syscall stubs and other functions
to libhaikucompat.a.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20447 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged changes from branch build_system_redesign at revision 14573.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14574 a95241bf-73f2-0310-859d-f6bbb57e9c96

Naive implementation of transfer_area(). It follows the suggested sematics
of the resolved ToDo, but could probably be made more efficient. Instead of
transfering the area, the area is cloned into the target teams' address space
and the original is deleted. This generates a new area_id for the transfered
area (as suggested by the ToDo). Updated syscall prototypes according to the
status_t to area_id return type change.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24320 a95241bf-73f2-0310-859d-f6bbb57e9c96

* fix the build of the libbe_test target


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22786 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added the disk device API to the libbe_haiku.so, so that libtracker.so builds
again for target libbe_test. Added respective syscall stubs and other functions
to libhaikucompat.a.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20447 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged changes from branch build_system_redesign at revision 14573.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14574 a95241bf-73f2-0310-859d-f6bbb57e9c96