Build the ASAN RTL without RTTI.

RTTI is on by default for the host compiler, which means that the ASAN
libs will depend on having a C++ RTL. This would mean that pure C code
could not be instrumented with ASAN.

Bug: 19566396

(cherry-pick of commit: 28b72eddd54cb1287dd7daae853e8e4b78fa17eb)

Change-Id: I333f978c5c623997b267ca1bd73ef4f351cae545
1 file changed