fix: occupied point check radius calculated incorrectly

fix: occupied point calculation takes too much cpu power
fix: buffer overrun in messaging processing
fix: running bots on hlds 3111e (cs 1.5) on linux*
build: added back correct ldscript for gcc and clang

* for some reason only gcc-compiled binaries working on centos5.8 and hlds 3.1.1.1e. clang binaries crashing immediately, so if you want to run bot on ancient os and/or hlds you need to recompile with gcc, as default linux binaries built with clang.

meson.build

@@ -102,7 +102,9 @@ if clang or gcc
          endif
             
          ldflags += [
-            '-flto'
+            '-flto',
+            '-Wl,--version-script=../ldscript.lds',
+            '-Wl,--gc-sections'
          ]
       endif
    endif