/usr/include/orc-0.4/ is in liborc-0.4-dev 1:0.4.16-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/orc-0.4/orc/
/usr/include/orc-0.4/orc-test/
/usr/include/orc-0.4/orc-test/orcarray.h
/usr/include/orc-0.4/orc-test/orcprofile.h
/usr/include/orc-0.4/orc-test/orcrandom.h
/usr/include/orc-0.4/orc-test/orctest.h
/usr/include/orc-0.4/orc/opcodes.h
/usr/include/orc-0.4/orc/orc-stdint.h
/usr/include/orc-0.4/orc/orc.h
/usr/include/orc-0.4/orc/orcarm.h
/usr/include/orc-0.4/orc/orccpuinsn.h
/usr/include/orc-0.4/orc/orcdebug.h
/usr/include/orc-0.4/orc/orcemulateopcodes.h
/usr/include/orc-0.4/orc/orcfunctions.h
/usr/include/orc-0.4/orc/orcmmx.h
/usr/include/orc-0.4/orc/orcneon.h
/usr/include/orc-0.4/orc/orconce.h
/usr/include/orc-0.4/orc/orcparse.h
/usr/include/orc-0.4/orc/orcpowerpc.h
/usr/include/orc-0.4/orc/orcprogram.h
/usr/include/orc-0.4/orc/orcsse.h
/usr/include/orc-0.4/orc/orcutils.h
/usr/include/orc-0.4/orc/orcx86.h
/usr/include/orc-0.4/orc/orcx86insn.h