- '-Os' fpc optimization compiler flag replaced with '-O2'
Note 1: '-Os' cause crash on device. Seems like fpc bug.
Note 2: Higher optimization flags ('-O3' and '-O4') has bad side effects, like wrong drawing of hogs.
07f3bf8d98a3
Hedgewars.png had a resolution more than twice as high as required; also fixed some (mostly obsolete) code that also contained a typo that would cause a warning/note in clang
