Added support for SEA IR.

- Modified makefile to take the existance of SEA_IR_ART
  file to mean "switch to sea ir mode".
- Switching SEA IR mode on leads to the new compiler being
  fed the fibonacci methods only, if they are used as input.
- Added partial support for the control flow subgraph of
  the SEA IR (instruction nodes and region nodes for
  conditional and unconditional branches).

Change-Id: I29020b8e2df5a00fde75715c3683cc25038589f4

Conflicts:
	src/compiler/driver/compiler_driver.cc
diff --git a/src/compiler/driver/compiler_driver.h b/src/compiler/driver/compiler_driver.h
index fdd2149..b37b74b 100644
--- a/src/compiler/driver/compiler_driver.h
+++ b/src/compiler/driver/compiler_driver.h
@@ -404,6 +404,7 @@
                                         uint32_t class_dex_idx, uint32_t method_idx,
                                         jobject class_loader, const DexFile& dex_file);
   CompilerFn compiler_;
+  CompilerFn sea_ir_compiler_;
 
   CompilerFn dex_to_dex_compiler_;