3f196e0293
Motivation example: ``` > lldb -c altmain2.core ... (lldb) var F (const char *) F = 0x0804a000 "" ``` The variable `F` points to a read-only memory page not dumped to the core file, so `Process::ReadMemory()` cannot read the data. The patch switches to `Target::ReadMemory()`, which can read data both from the process memory and the application binary.