Add job error output test.

make(1) with openpty() currently fails this test: there's a race condition
and error output is sometimes lost.

tools/regression/usr.bin/make/execution/joberr/Makefile

@@ -0,0 +1,10 @@
+# $FreeBSD$
+
+check-jobherr:
+.for _t in 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
+	@-${MAKE} -f ${MAKEFILE} -j2 do-$@
+.endfor
+
+do-check-joberr:
+	@echo "Error: build failed"
+	@exit 1

tools/regression/usr.bin/make/execution/joberr/expected.status.1

@@ -0,0 +1 @@
+0

tools/regression/usr.bin/make/execution/joberr/expected.stderr.1

@@ -0,0 +1,30 @@
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error
+1 error

tools/regression/usr.bin/make/execution/joberr/expected.stdout.1

@@ -0,0 +1,90 @@
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+Error: build failed
+*** Error code 1
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)
+*** Error code 2 (ignored)

tools/regression/usr.bin/make/execution/joberr/test.t

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# $FreeBSD$
+
+cd `dirname $0`
+. ../../common.sh
+
+# Description
+DESC="Test job make error output"
+
+# Run
+TEST_N=1
+TEST_1=
+
+eval_cmd $*