Update signal.c for build with old platforms
Change-Id: Ica87465a73004c0885d51e384acd4f42947cc19b
Signed-off-by: Pavel Chupin <pavel.v.chupin@intel.com>
Also
1) rename lib -> lib64
2) add src/ for android-20/arch-arm64 and arch-mips64
3) delete android-9/arch-arm64 and arch-mips64
Change-Id: I4958c4e52946e29e57b910f39ff0104200853a06