clean up image loading a bit. gets rid of useless "Passed NULL data source" or PhysFS file not found errors

committing patch from issue #798, as requested by unC0Rr

fix cabal build (on linux)

fix for "Unexpected semi-colons in conditional" issue, as reported by YuGiOhJCJ (see http://www.hedgewars.org/node/5860 ) big thanks to burp for helping to identify and fix this issue

Some further work on map optimizer

tweak untint a little (especially in connection with GrayScale)

theme configurable sudden death music. untested

allow teleporting outside Land[]

escape info message arguments, fixes issue #801: Frontend parses INFO command output as html

collision indicator on failed girder placement (especially useful with rubberband I guess). still needs some tweaks but I am going to bed now :P

disable these weaponset flags. they bug up highlander and otherwise have no useful impact on the script.

get rid of fpc warnings/hints

Fix some of issues found by coverity

Official racer challenge map #8

Inform frontend of lines which didn't change anything on the map in advanced drawn maps mode

Fix some pas2c engine warnings

Count number of pixels changed during draw

Small optimization (no need to draw last point of the path)

Oops, should stop coding at night

Fix fpcrtl_strncompareA, also replace strncmp with memcmp for more efficiency

Support OR operator in $IFDEF. Fixes pas2c builds.

rolling back the rest

rolling back (most of) lua 5.2 compatibility patches. hopefully that will unbreak unC0Rr's lua issues for now.

sekret feature (test commit)

- Increase limits on number of mines and explosives in game scheme - Stop trying to place mines/explosives after 4 fails to place in row

Drawn maps optimizer - first steps: - Break paths into segments

Fix crashers in rc plane code

Merge

don't search for lua 5.1 anymore

Don't activate invulnerability/vampirism between shots of multiattack weapon