Remove all invocations of SetSubDirSupportedPlatformsBeOSCompatible.

Allow to change brightness from the command line

screenmode can now set the brightness (only for intel_extreme, still).
Both absolute and relative values are accepted, allowing to bind
keyboard shortcuts to "increase brightness" and "decrease brightness".

Change-Id: I5221532ebdfba5df1b4d4e1f3331406359f2807c
Reviewed-on: https://review.haiku-os.org/655
Reviewed-by: Kacper Kasper <kacperkasper@gmail.com>

Use libstdc++, libsupc++ and libgcc from gcc_syslibs.

* Instead of faking libstdc++.so from libstdc++.a, use libstdc++.so
from the gcc_syslibs build feature for everything except x86_gcc2.
* Use libgcc_s.so from the gcc_syslibs build feature for everything but
x86_gcc2 (which still carries libgcc as part of libroot.so).
* Drop filtering of libgcc objects for libroot, as that is no longer
necessary since we're only using libgcc-as-single-object for libroot
with x86_gcc2, where the filtered object file doesn't exist. Should
the objects that used to be filtered cause any problems as part of
libgcc_s.so, we can always filter them as part of the gcc build.
* Use libsupc++.so from the gcc_syslibs build feature for everything but
x86_gcc2.
* Adjust all Jamfiles accordingly.
* Deactivate building of faked libstdc++.so for non-x86-gcc2. For
x86_gcc2, we still build libstdc++.so from the sources in the Haiku
source tree as part of the Haiku build .
* Put gcc_syslibs package onto the image, when needed.

* Build fix due to the changes in Screen.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42452 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Build fix; gtf.cpp is also needed for the screenmode command line tool.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31655 a95241bf-73f2-0310-859d-f6bbb57e9c96

* merged 32bit-wchar_t branches of buildtools and haiku back into
the respective trunk

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31443 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Wrote a "screenmode" application that can be used to get and set the current
screen mode from the command line.
* With its "--fall-back" parameter, it's also thought to be called from BWindow
when a specific shortcut has been pressed (similar to screenshots) - this
part is not implemented yet. Anyone against <Command><Control>-<Escape>?
* Added it to the image.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26150 a95241bf-73f2-0310-859d-f6bbb57e9c96

Use libstdc++, libsupc++ and libgcc from gcc_syslibs.

* Instead of faking libstdc++.so from libstdc++.a, use libstdc++.so
from the gcc_syslibs build feature for everything except x86_gcc2.
* Use libgcc_s.so from the gcc_syslibs build feature for everything but
x86_gcc2 (which still carries libgcc as part of libroot.so).
* Drop filtering of libgcc objects for libroot, as that is no longer
necessary since we're only using libgcc-as-single-object for libroot
with x86_gcc2, where the filtered object file doesn't exist. Should
the objects that used to be filtered cause any problems as part of
libgcc_s.so, we can always filter them as part of the gcc build.
* Use libsupc++.so from the gcc_syslibs build feature for everything but
x86_gcc2.
* Adjust all Jamfiles accordingly.
* Deactivate building of faked libstdc++.so for non-x86-gcc2. For
x86_gcc2, we still build libstdc++.so from the sources in the Haiku
source tree as part of the Haiku build .
* Put gcc_syslibs package onto the image, when needed.

* Build fix due to the changes in Screen.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42452 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Build fix; gtf.cpp is also needed for the screenmode command line tool.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31655 a95241bf-73f2-0310-859d-f6bbb57e9c96

* merged 32bit-wchar_t branches of buildtools and haiku back into
the respective trunk

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31443 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Wrote a "screenmode" application that can be used to get and set the current
screen mode from the command line.
* With its "--fall-back" parameter, it's also thought to be called from BWindow
when a specific shortcut has been pressed (similar to screenshots) - this
part is not implemented yet. Anyone against <Command><Control>-<Escape>?
* Added it to the image.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26150 a95241bf-73f2-0310-859d-f6bbb57e9c96