Changed the default location of OBJ_ROOT to follow these rules:
	1. If USER is defined and localhome/$USER is a directory, set OBJ_ROOT
	   to /localhome/$USER
	2. Otherwise, set OBJ_ROOT to .
This should hopefully fix the nightly tester.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7451 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed