Add bitcode reader 3.0 to libbcinfo.

Since LLVM 3.1 remove some auto upgrade code, the old bitcode
will become bitcode incompatible.  So we have to add the
bitcode reader 3.0 to libbcinfo.

Change-Id: I3ac1a1132c361cb9251c0a4ac9782c8cc62df7ea
6 files changed