4.1
* tests/scripts/features/load: Avoid unused variable warnings.
[SV 41983] Support omitting the text argument to $(file ...)
* makeint.h (STOP_SET): [SV 40371] Cast to unsigned char.
[SV 42249] Propagate correct rule status results.
Solaris /bin/sh can't handle multiple options ("-e -c").
* read.c (eval): [SV 41677] Correct test for TAB vs. 8 spaces.
Update the test template. A few fixes in run_make_test(). Rename implicit_prereq_eval to patternrules, to be the start of a suite of tests of pattern rules.