Raise an error if writes to pipe fail (bug #47381). * gl2ps-print.cc: Re-order #includes. * gl2ps-print.cc (gl2ps_renderer::draw): When copying temporary file to pipe, check that write succeeds by comparing bytes read to bytes written. If an error has occured, clear the SIGPIPE signal by calling octave_signal_handler and then raise an error. letting SIGPIPE interrupt handler eventually deal with the problem.

273589d5bdbf4d34ea0c458bcfdfe2fb7a457457 gnulib-hg