Fix for TC problem with Path unit test (#1621)
Fix for TC problem with Path unit test (#1621)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Hopefully fix for TC issue where canonical path causes problems - perhaps because on test machines visibility of paths outside the build environment is limited.
csyonghe/slang,csyonghe/slang,csyonghe/slang,shader-slang/slang,shader-slang/slang,shader-slang/slang