[Android] Fix missing clang deps from libcommon
[Android] Fix missing clang deps from libcommon

libcommon requires libblocksruntime when compiled with clang. A common static
libs flag has been created to automatically include dep for all three targets when
compiling with clang. '-fblocks' flag is already propagated from
'COMMON_CFLAGS'.

Signed-off-by: Anestis Bechtsoudis <7611fa5e9fd33f993ed88a8464a47644a6f066ca@census-labs.com>

google/honggfuzz,google/honggfuzz,anestisb/honggfuzz,google/honggfuzz