-Update from WebTranslator v3.0:
traditional_chinese - 1 changes by siu238X
hungarian - 31 changes by Brumi
norwegian_bokmal - 1 changes by 
polish - 4 changes by McZapkie


git-svn-id: http://svn.openttd.org/trunk@26701 6aa0318a-3be1-0310-93fa-89fd2396df07
-Fix [FS#6067]: integer overflows in acceleration code causing either too low acceleration or too large acceleration


git-svn-id: http://svn.openttd.org/trunk@26702 6aa0318a-3be1-0310-93fa-89fd2396df07