FindCUDA: Remove rpath logic outdated by CMake's own @rpath support

Otherwise binaries end up with two copies of the same value and the OS X
install_name_tool may corrupt them.
Merge topic 'cuda-rpath-osx' into next

59814cb4 FindCUDA: Remove rpath logic outdated by CMake's own @rpath support
FindHg: Do not use cygwin hg on Windows

The cygwin hg client is a text file with a '#!/bin/python" line.
This cannot run on Windows.
Merge topic 'FindHg-no-cygwin-hg-on-windows' into next

ed997de4 FindHg: Do not use cygwin hg on Windows
Tests/ExternalProject: Skip Windows hg tests with cygwin hg

The cygwin hg client is a text file with a '#!/bin/python" line.
This cannot run on Windows.
Merge topic 'ExternalProject-no-cygwin-hg-on-windows' into next

ad984b60 Tests/ExternalProject: Skip Windows hg tests with cygwin hg