gcc-11.1.0-0: Export LD_LIBRARY_PATH in profile

C++ programs often need the libraries, so add them to the profile.
LLVM/clang already does that.

The existing profiles have been updated after the build, so also add the
line to the build script of the newest GCC release in the tree, so it’
won’t be forgotten.

Resolves: #193

gcc-11.1.0-0.build.sh

@@ -26,6 +26,7 @@ exec </dev/null
 mkdir -p $PREFIX
 cat >$PREFIX/profile <<-EOF
 	PATH=$PREFIX/bin:\$PATH
+	export LD_LIBRARY_PATH=$PREFIX/lib\${LD_LIBRARY_PATH:+:\$LD_LIBRARY_PATH}
 	if [ -d $PREFIX/.compatlibs ]; then export LD_LIBRARY_PATH=$PREFIX/.compatlibs\${LD_LIBRARY_PATH:+:\$LD_LIBRARY_PATH} ; fi
 EOF
 . $PREFIX/profile