Add an option to specify a list of methods for LIR dumping.

An example would be:
--runtime-arg -verbose-methods:Array.checkRange32,Array.checkRange64
or
"-verbose-methods:void Array.checkRange32,void Array.checkRange64"

Change-Id: I61c1eb3b2eb4b24126a9264261c27889d53cc6bd
diff --git a/runtime/base/logging.cc b/runtime/base/logging.cc
index 46b8ff2..730a2c2 100644
--- a/runtime/base/logging.cc
+++ b/runtime/base/logging.cc
@@ -26,6 +26,8 @@
 
 LogVerbosity gLogVerbosity;
 
+std::vector<std::string> gVerboseMethods;
+
 unsigned int gAborting = 0;
 
 static LogSeverity gMinimumLogSeverity = INFO;