Refactor the AnalysisConsumer to analyze functions after the whole

translation unit is parsed. This enables us to inline some calls when still
analyzing one function at a time.

Actions are classified into Function, CXXMethod, ObjCMethod, 
ObjCImplementation.

This does not hurt performance much. The analysis time for sqlite3.c:

before:
real    17m52.440s
user    17m49.460s
sys    0m2.010s

after:
real    18m0.500s
user    17m56.900s
sys    0m2.330s

DisplayProgress option is broken now. -inine-call action is removed. It
will be reenabled in another form, perhaps as an indenpendant option.

llvm-svn: 102689