HelenOS sources

pid_t              46 uspace/lib/c/include/elf/elf_linux.h typedef int pid_t;
pid_t              46 uspace/lib/posix/include/libc/elf/elf_linux.h typedef int pid_t;
pid_t              52 uspace/lib/posix/include/posix/sys/types.h typedef int pid_t;