CVS psmith make: A few test bug fixes:

CVSROOT:        /cvsroot/make
Module name:    make
Changes by:     psmith  02/09/10 18:23:20

Modified files:
        tests/scripts/features: conditionals export 
        tests/scripts/options: dash-B 
        tests/scripts/variables: automatic 

Log message:
A few test bug fixes:
  * Never use "touch" in make rules; it breaks on most sub-second
    supporting systems.  Use echo "" > $@ instead.
  * Forgot to close test makefiles before using them!

All the above worked fine on Linux but failed miserably on Solaris.