This adds a configure option --disable-librsvg, but defaults to
using the library if it is present during configure.
When enabled, Openbox will attempt to load svg image files using
the library, similar to how Imlib2 is used for other image
formats.
Since librsvg uses the libXml2 library, their errors end up in
the same global namespace as Openbox config file parsing. To
avoid this, we reset the libXml current error whenever we start
loading a file, and save the last error that occurred when we
are finished, by storing the error in the ObtXmlInst.
In Openbox 3.4 we used the group leader's WM_CLASS value when it was available.
This prevents windows in the group from overriding with a specific value,
however which is bad. More rationale can be found in
http://icculus.org/pipermail/openbox/2010-September/006790.html
Some applications (eg. Firefox) use command line flags to set the WM_CLASS
property on the group leader but do not change the property on the mapped
windows themselves. This makes matching these windows not possible in Openbox
3.5.
We resolve this by exposing the group's WM_CLASS values alongside the individual
window's values. We add _OB_APP_GROUP_NAME and _OB_APP_GROUP_CLASS properties
along with "groupname" and "classname" attributes for the rc.xml application
tag.
We were finding the KeySym first, and then converting back to a modifier mask.
But KeySym on a key's release can differ from on its press, and we don't need
them to determine the modmask from the keycode.
[setxkbmap -option "grp:shifts_toggle"] turns Shift_L into XK_ISO_Prev_Group on
key release, and Shift_R into XK_ISO_Next_Group.
properly (and quickly) check for existence of required keys
figure out what an app can open from its exec key
validate the %fields in an app's exec key
localized names still don't work.
most of the app-specific stuff isn't done yet.
categories aren't handled yet (to only show in/not show in some category)
Move the .desktop file parsing details into obt/ddparse.c, which generates
some hash tables holding the data of the file.
Add a new obt/link.c which will build an ObtLink from a parsed .desktop file,
and may support other ways to create these links in the unforseeable future
