Added summary info to GCDAProfiling.
Added summary info to GCDAProfiling.

This function will be called by GCOVProfiling to write and update object
and program summaries to be read in by llvm-cov.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@194499 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt