import-trace: introduce RandomJumpImporter

The random jump importer defines trace events, that indicate all
possible jumps into a specific instruction range. The region where
jumps should start can be defined by a memory map given with
--jump-from. For each instruction declared in that memory range, all
possible jumps to a memory region specified by with --jump-to are
inserted. The target of the jump is saved in the data_address
field. So all database tools work as expected.

for each event E \in region(--jump-from):
    foreach Instruction in region(--jump-to):
         insert_trace(injection_instr = E.IP(), data_address = Instruction.addr)

Change-Id: Ie163968acae47fc6c946fc77774c47ee07950bab

tools/import-trace/CMakeLists.txt

@@ -7,6 +7,7 @@ if (BUILD_LLVM_DISASSEMBLER)
   set(SRCS ${SRCS}
     InstructionImporter.cc
     RegisterImporter.cc
+    RandomJumpImporter.cc
   )
 
   include(FindLLVM)