backward-incompatible change in the 2008 POSIX specification.
- Add the .SHELLFLAGS variable so people can choose their own shell flags.
- Add tests for this.
- Add documentation for this.
One of our translations disappeared from the translations site so remove it.
The fdl.texi file was changed to not contain any @node entries, so add some
around it in make.texi.
GNU make. Also he provides some other performance fixups after doing
some profiling of make on large makefiles.
Modify the test suite to allow the use of Valgrind to find memory problems.
* Define COFLAGS to avoid unknown variable warning.
* Fix some usec problems on UnixWare.
* Don't remove .INTERMEDIATE targets specified on the command line.