[ASan] make free_hook_realloc test more robust

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183387 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] One more fix for realloc: check that reallocated chunk is valid before calling memcpy

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183390 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] Add a few tests for use-after-scope mode

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183391 91177308-0d34-0410-b5e6-96231b3b80d8
[LSan] remove unneeded empty directory

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183392 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] move all lit_tests under TestCases

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183395 91177308-0d34-0410-b5e6-96231b3b80d8