[PATCH] test-suite: XCore target: fix handling of <string.h> and <memory.h>

[robert lytton]

  There are a handful of trivial functions and header files required by test-suite that are not present in the xcore release libraries.
  (e.g. getcwd(), random(), ntohs(), netinet/in.h)

  It may be neater to bundle all these up, including memory.h & strings.h, as an additional library needed for running the test-suite.
  This approach seems to be working fine and am happy to abandon the patch.

http://llvm-reviews.chandlerc.com/D2619