wrlib: Improved NETPBM support, file format detection

1) the tests examples were not compiling cause of a missing X11 lib call

2) load.c is used to identify the file format, i rebased the checks on
   what is provided from mime package, it will be faster

3) according to that checks i was able to see that some netpbm support
   type are missing (exactly: ascii graymap (PGM files) and pixmap (PPM)
   and ascii/binary bitmap (PBM))

See the link below for more details.
http://en.wikipedia.org/wiki/Netpbm_format
Fix out of source build for i18n pot files

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Updated Hungarian translations

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Set no_focusable for "notification" and "tooltip" windows

Notification popups, and tooltips for that matter, shouldn't be taking
focus away from apps the user is actually interacting with.
WPrefs: Make Dock preferences pane less busy and fix up some strings

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Updated Hungarian translation

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
wrlib: Added support for webp image

This patch is adding support for google webp image format, if you
don't know it a quick recap is to say that according to their tests
it's better than png and jpeg.

Follow the link below for some more details:
https://developers.google.com/speed/webp/
Updated copyright date
WPrefs: Fixed compiler warnings

This patch is used to catch some return function value, to make the
compiler happy.
WPrefs: Completely removed function 'makeTitledIcon' that did nothing

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
test: Added a few comments to explain things

As this code may be used as an example, we'd better do things clear

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
WINGs: Add support for syslog messaging

This patch is used to add support for syslog messaging implemented in
WINGs lib directly, so available from the lib itself and wmaker too.
I believe it will in a first time help to get some logging info
centralized in one point, and in a second time maybe add some info
level messages like wmaker is starting, stopping, restarting and else.

For now, it's built by default when the syslog support is found, maybe
we could also disable it by default.
WUtil: Fixed incorrect header being included

WUtil's file misc.c was including the private header for WINGs, where it
should have been using WUtil's public header instead.

Took opportunity to include the appropriate copyright header.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
WUtil: Added missing const attribute to function arguments

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
doc: Minor updates to the main README file

Including proper instructions for compiling with debug enabled;
removing offensive remark (even if true); removing deprecated docklib stuff.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
doc: Added info on git send-email in the 'perfect-patch' recommendation

As this is a feature that is quite handy, let's document it there so more
people can benefit from it, we'll probably gain from less patches that
mail software broke or that are hard to review, because not inlined.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
doc: Ran spell-checker on most text files present in the top directory

Lang was set to en_US; fixes a number of typos

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
wrlib: WEBP header fixes
Scale image to fit in preview panel
Fixed unknown image format detection in Icon Chooser preview mode

When pressing the Preview button from Icon chooser, a list of preview
icons is displayed. When a unknown image format is encountered the
list is showing duplicated entries. That patch is correcting that issue
and adding rescale feature to that preview show.