Assertion Error when line breaker '\' appear in makeout.txt

[zyh1121]

When the makeout.txt has line breakers such as

gcc -fPIC -pthread -m64 -Wa,--noexecstack -Wall -O3 -L. -z defs -Wl,-znodelete -shared -Wl,-Bsymbolic   \
	-o test/p_test.so -Wl,--version-script=test/p_test.ld test/p_test-dso-p_test.o \
                 -ldl -pthread 

run_all.py will exit with assertion errors. It seems line breakers are not handled properly so that it cannot locate '-o'.

Traceback (most recent call last):
  File "run_all.py", line 167, in <module>
    main()
  File "run_all.py", line 115, in main
    ret_val = __run_component(curr_comp, component_times)
  File "run_all.py", line 140, in __run_component
    ret_val = component_obj.perform()
  File "/dr_checker/gitrepo/helper_scripts/runner_scripts/components/llvm_build.py", line 60, in perform
    self.arch_num, self.clang_bin, command_output_dir=self.separate_out)
  File "/dr_checker/gitrepo/helper_scripts/runner_scripts/components/llvm_build.py", line 225, in _generate_llvm_bitcode
    build_output_dir=command_output_dir)
  File "/dr_checker/gitrepo/helper_scripts/runner_scripts/components/llvm_build.py", line 202, in _get_llvm_build_str
    assert (output_file_idx != -1)
AssertionError