Move const string with non ascii char to language file.
Set TESTBENCH
reduce memory and cpu usage for LKLanguage
update Makefile
Remove Unused code.
fix possible buffer overflow.
code cleanup.
fix include.
add CharUpper fuction in linuxcompat
Add "_CRT_NON_CONFORMING_SWPRINTFS" define to Makefile fo compatibility with mingw64 4.8.2
new cross platform filesystem api
FIX buffer overflow error :

[Common/Source/Draw/LKDrawVario.cpp:442]: (error) Array 'brc[32]' accessed at index 47, which is out of bounds.
[Common/Source/Draw/LKDrawVario.cpp:416]: (error) Array 'negativeBrush[16]' accessed at index 31, which is out of bounds.
add new TARGET : PCX64, only use it for debugging facility
add -std=c++0x flag & fix error
 - replace auto_ptr by unique_ptr
 - add some include <math.h> for fix missing definition of ERANGE in stl
improve runtime.log message for "Bitmap file missing"
fix Signed/Unsigned warning in "CP_2D_polygon_clip"
add missing const
new base class for CAirspace, allow to copy aispace instances, without mistake on virtual function usage.
  it's more robust, compile time error instead of runtime artefact.