adb: use sys/uio.h for iovec operations
readv/writev and struct iovec are declared in sys/uio.h per POSIX. using it without sys/uio.h is a GNU extension.
ref #10794 (closed)
readv/writev and struct iovec are declared in sys/uio.h per POSIX. using it without sys/uio.h is a GNU extension.
ref #10794 (closed)