wscript: set rpath to current folder, LD_LIBRARY_PATH is unneeded anymore

Fix README and AppImage launch script accordingly

README.md

@@ -35,8 +35,6 @@ This repository contains our fork of HLSDK and restored source code for some of
 You still needed to copy `valve` directory as all game resources located there.
 3) Run the main executable (`xash3d.exe` or AppImage).
 
-Note: on Linux, without AppImage, you may need to create a shell-script with the command `LD_LIBRARY_PATH=. ./xash3d`.
-
 For additional info, run Xash3D with `-help` command line key.
 
 ## Contributing

game_launch/wscript

@@ -37,6 +37,7 @@ def build(bld):
 		features = 'c cxx cxxprogram',
 		includes = includes,
 		use      = libs,
+		rpath    = '.',
 		install_path = bld.env.BINDIR,
 		subsystem = bld.env.MSVC_SUBSYSTEM
 	)

scripts/gha/build_linux.sh

@@ -80,7 +80,6 @@ echo "Xash3D FWGS installed as AppImage."
 echo "Base directory is $XASH3D_BASEDIR. Set XASH3D_BASEDIR environment variable to override this"
 
 export XASH3D_EXTRAS_PAK1="${APPDIR}"/extras.pak
-export LD_LIBRARY_PATH="${APPDIR}":$LD_LIBRARY_PATH
 ${DEBUGGER} "${APPDIR}"/xash3d "$@"
 exit $?
 EOF

vgui_support/wscript

@@ -119,6 +119,7 @@ def build(bld):
 		features = 'cxx',
 		includes = includes,
 		use      = libs,
+		rpath    = '.',
 		install_path = bld.env.LIBDIR,
 		subsystem = bld.env.MSVC_SUBSYSTEM
 	)