check_cont: autoflush because of STDOUT+STDERR mixture
mapserver_comment: warning fix
bbbikegooglemap: show original filename in case of failed uploads

This way I can distinguish failed uploads during BBBike testing from
real user uploads.
cgi, draw route: fail early on expired sessions

Formerly, even if a session was expired, bbbike.cgi tried to draw the
image or pdf nevertheless. This resulted only in a complicated flow
for drawing the error message into the image/pdf
("empty_image_error"). And this did not work in the pdf case at all
(since PDFCairo.pm? since ever?).

Now the expired session is detected early, and a simple html error
page is returned.
MFLAGS=""
reset MAKEFLAGS="" too, see 39d8bbb4e4eaeffcd6a426fcebba1ac61d9c057d
data update (minor)
Merge remote branch 'eserte/master' into world

Conflicts:
	cgi/msg/en
run on 32bit systems as well (openjdk)
run update-files with LANG=C
tune make perltidy
tune make perltidy
setup a debug handler to avoid noise output

 e.g. Cannot handle numcolors=1 at bbbike/miscsrc/Typ2Legend/XPM.pm
locale fixes, LC_ALL=C