Update aws-c-common to 52dc7dcc7
Update aws-c-common to 52dc7dcc7

To fix build warnings caused by discrepant setting of C_FLAGS in aws-c-common (#1039)
This commit also includes fix for missing SIZE_MAX definition on Android.
jt70471/aws-sdk-cpp,aws/aws-sdk-cpp,aws/aws-sdk-cpp,jt70471/aws-sdk-cpp,aws/aws-sdk-cpp,aws/aws-sdk-cpp,cedral/aws-sdk-cpp,cedral/aws-sdk-cpp,jt70471/aws-sdk-cpp,awslabs/aws-sdk-cpp,jt70471/aws-sdk-cpp,cedral/aws-sdk-cpp,jt70471/aws-sdk-cpp,jt70471/aws-sdk-cpp,cedral/aws-sdk-cpp,cedral/aws-sdk-cpp,awslabs/aws-sdk-cpp,aws/aws-sdk-cpp,aws/aws-sdk-cpp,awslabs/aws-sdk-cpp,cedral/aws-sdk-cpp,awslabs/aws-sdk-cpp