Enable file selection dialog for preferences

This enabled a file selection dialog for selecting default log file
under the preferences.

[Dirk Hohndel: added missing declaration to .h file]

Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
INSTALL: add notes for a native win32 build

There are more details to it, but i decided to exclude them
as these seem situational:

- libraries tend to mostly fail to build from source on win32...
- libiconv may be required by an oddly pre-built libxml2 package
- pkg-config requires a CMD wrapper so that an extra CRLF line is
trimmed from stdout

If someone takes on this task, i guess he/she may pop on the
mailing list for questions.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Print: remove profile border when printing

Custom widget frame styles such as 'Sunken' and 'Raised' which seem to
varry between OS will be captured as well:
http://harmattan-dev.nokia.com/docs/library/html/qt4/qframe.html#Shape-enum

So instead we temporarily set the profile frame to QFrame::NoFrame and
then restore it to the previous value.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>