$ git bisect good 429ecb2b94a66a11cf06be7303d05aa2038d19d2
$ git bisect bad f25cc0dbae0209f2647ac5eec9fe6ddb08174f55
Bisecting: 10 revisions left to test after this (roughly 3 steps)
[d0be27415eb9386b2367ab798268da6fbe8b7a68] Speed up removing a node (less block mesh updates).
$ git bisect bad
Bisecting: 4 revisions left to test after this (roughly 2 steps)
[817e3a6c647326dc619018488308a51271ee6763] Fix regression: mouse wheel couldn't scroll from last hotbar item to first
$ git bisect good
Bisecting: 2 revisions left to test after this (roughly 1 step)
[c40e993ce4a13321e57856fb40566fa93a5ef187] Replace setting unlimited_player_transfer_distance with player_transfer_distance
$ git bisect good
Bisecting: 0 revisions left to test after this (roughly 1 step)
[05e7f71b330a2413e3a40658c6c7c79b5998a0db] Fix dump() indentation with non-tab indents
$ git bisect good
d0be27415eb9386b2367ab798268da6fbe8b7a68 is the first bad commit
commit d0be27415eb9386b2367ab798268da6fbe8b7a68
Author: RealBadAngel <maciej.kasatkin@o2.pl>
Date:   Fri Nov 7 21:52:43 2014 +0100

    Speed up removing a node (less block mesh updates).

:040000 040000 78c38f89fc6074fe3f5fc35166ebec4ba9cbf88b 6998d4b7a1e35a664567843dd1172afad5d485b0 M src
Implement proper font handling
Scale form elements consistently

The ratios between the sizes of form elements, including text, is now
fixed, aside from variations caused by rounding.  This makes form layout
almost fully predictable, and particularly independent of player's
screen size.  The proportions of non-text elements are the traditional
proportions.

For compatibility, the way in which element positions and sizes are
specified remains unchanged, in all its baroqueness, with one exception.
The exception is that the position of a label[] element is now defined
in terms of the vertically center of the first line of the label,
rather than the bottom of the first line of the label.  This change
allows a label to be precisely aligned with button text or an edit box,
which are positioned in a centering manner.  Label positioning remains
consistent with the previous system, just more precisely defined.

Make multi-line label[] elements work properly.  Previously the code set
a bounding rectangle assuming that there would be only a single line,
and as a result a multi-line label would be cut somewhere in the middle
of the second line.  Now multi-line labels not only work, but have
guaranteed line spacing relative to inventory slots, to aid alignment.

Incidentally fix tabheader[] elements which were being constrained to
the wrong width.

Given an unusually large form, in variable-size mode, the form rendering
system now chooses a scale that will fit the entire form on the screen,
if that doesn't make elements too small.  Fixed-size forms, including the
main menu, are have their sizes fixed in inch terms.  The fixed size for
fixed-size forms and the preferred and minimum sizes for variable-size
forms all scale according to the gui_scaling parameter.
Make hud use fontengine too
Fix non coding style conforming glb_fontengine to g_fontengine
Fix fonts never been deleted due to grabbed to often
settings: Add setting groups and multiline entries
Fix segfault at exit caused by non grabbed font
LuaSettings: Sanitize setting name strings
Fix build
Note: this does not fix the warnings generated by clang
Merge branch 'master' into mygame
Fix node 0,0,0 being highlighted when enable_node_highlighting == false

Without this patch node 0,0,0 is highlighted when enable_node_highligting is false
There is a minor lighting issue remaining, however it seems to be related to a different bug (https://github.com/minetest/minetest/issues/1887)
Merge branch 'master' into mygame
Merge branch 'fix_shadow_issue(rba)' into mygame