create display::blindfold accessors
create blindfold struct
use blindfold struct in playmp controller to implement feature
Ignore filenames with spaces and complain about them

It was already impossible to directly include such files,
as the preprocessor interpreted such a directive as a macro with arguments.
Disallow filenames with spaces on the add-on server
Warn about whitespace in illegal filename message
Merge branch 'master' of github.com:wesnoth/wesnoth-old
Clear RELEASE_NOTES
Also disallow CR, LF, HT, VT
changelog entries
Merge branch 'master' of github.com:wesnoth/wesnoth-old
fix bug associated to idle sides

the is_local() function should return true if a side is idle. if not this causes multiple side init events when a side disconnects and is assigned idle, and thus makes the server unhappy.
Revert "[wmlunits] Disable crashing chunk_start stuff someone added."

This reverts commit 8aa0febfde421f4f2a986679e0a9912d0d6277d0.
As spaces in filenames are now illegal, this is no longer a problem.
Merge branch 'master' of github.com:wesnoth/wesnoth-old
implement blindfold by shroud
minimap does not draw units if blindfolded

display.show_everything() returns false if blindfolded
units now say that blind observers can't see them
try to disable reachmap info in blindfold
Merge pull request #111 from cbeck88/blindfold_ii

Blindfold ii