un-confuse lupdate: make #ifdef'd braces symmetrical

as a side effect, this also de-duplicates the code, which is good in its
own right.

Change-Id: I504cb518276fdf610639c3337e3842570b97815f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: John Layt <jlayt@kde.org>
un-confuse lupdate: remove excess brace in dead code

Change-Id: I7b81121b559f18446c4e546ad4f00cb4a592ca7f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
un-confuse lupdate: use #if 0 consistently

it's no good idea to #if 0 the opening brace but comment out the closing
one.

Change-Id: I6f9ca8f14f0dc82fb22df85de547564336ed0476
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
don't put QLibraryInfo and QSettings into bootstrap lib

it's not necessary. it was an artifact of a misguided approach to making
qdoc aware of the qt installation dirs.

Change-Id: I5ff363c8400d17698bf715e70b904aa69f71f0d8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
bye-bye .qmake.cache

well, not really - qt_parts.prf will still create one, but it will be
empty.

apart from being cleaner, this now finally makes it possible to load an
unconfigured qt source tree into qtcreator without random parts of the
tree being missing from the project explorer.

Change-Id: Ida7ee77ecb450af05bfa66106caf2067b02f1a7f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
purge QT_{SOURCE,BUILD}_TREE from dictionary

both variables are available class-wide anyway.

Change-Id: I97c13de9ead44638e9310b62f02d8cd1c910df94
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>