Core: xDefines - add xNO_VTABLE
Core: fix namespaces
Core: CxUtils - use std for math functions
Debug: CxStdDebug - use C++ headers
Gui: CxMsgBox - temp disable X11 lib
CxMsgBox: gix XLIB includes
Core: xCore - fix namespaces
Debug: fix code style
CMake: FindXCB.cmake - add
CMake: add FindXCB.cmake
Gui: CxMsgBox - XLIB -> XCB
Core: CxString - fix
Core: xFunctors - fix code style
Core: xFunctors - fix
Core: xFunctors - remove default method's params
Doc: Build - add XCB flag
Gui: CxMsgBox - remove libX11
CMake: fix
CMake: review
Core: xConfig.h.in - fix code style