debug/gdb: install gdbinit sample file

gdb needs to know where to find the libstdc++ helper python script
to do, well, whatever it has to do with it...

We can't install that in the user's ~/.gdbinit, it's too complex to
handle all the cases. Moreover, if the user is using more than one
toolchain, we can't put all that stuff in there...

Just provide a sample config file the user can adapt to his/her
own needs.

Thanks go to Khem RAJ for providing such a hint:
http://sourceware.org/ml/crossgcc/2011-07/msg00026.html

Reported-by: ANDY KENNEDY <ANDY.KENNEDY@adtran.com>
CC: Khem Raj <raj.khem@gmail.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

docs: update table of content for known issues

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

kernel/linux: add 3.0 Woohoo! \o/

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

kernel/linux: prepare to handle 3.x

The place to get 3.x has changed; the version scheme has changed.

No need to be overkill, just support 3.x; 4.x is not even dreamt of.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

kernel/linux: add latest versions

Still waiting for 3.0, though... ;-)

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

docs: update known issues

Document the glibc build failures with male-3.82.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

misc: fix more typos here and there...

Reported-by: "Antony N. Pavlov" <antony@niisi.msk.ru>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

misc: fix typos

Reported-by: "Antony N. Pavlov" <antony@niisi.msk.ru>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

1.11: update version to 1.11.4+hg

Tagging release 1.11.4