Otherwise QPixmap complains when used outside of the main Qt thread
and resets itself to null pixmap, eventually leading to crashes.

This reverts commit 89f7e176.

add initial code to generate language specific sample preview text samples for
use for font previewing in format->character

split out code that creates sample text for different scripts
add extra scripts and sample text
add extra space between sample text preview and font name
add guess-script from opentype unicode coverage bits
split out code that knows the names of symbol fonts which don't
have symbol encoding set

Bites at least with the Android cross-gcc 4.4.3.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41847

It is just a helper application. The desktop file still makes sense to
keep the MIME type association.

Linking .rdb files has been disabled as it appears completely broken
(erroneously picking up a testtools/*/lib/services.rdb instead of one
from solver).

Undo basis/brand split: moved .rdb files from basis program/ to brand program/ (merging the two services.rdb files).

this should make it easier to deal with the increased complexity in the
unit tests for vba and star basic
we should not mess with the normal calc tests while working on advanced
vba and basic tests

expected 'void *' but argument is of type 'volatile int *'

errno is volatile on Android, and apparently it is not OK to pass the
address of a volatile valye to a function expecting void * in their
gcc version.