COPTS towards the end of final CFLAGS so that it can be used to override Makefile and other defaults. Using it in Makefiles risks having options set using it clobbered when somebody uses it on the command line. Approved by: bde
the file with a regular expression. Useful for e.g. 'cvs diff' output. Also compile cleanly with -Wall and fix a few style bugs. PR: bin/9405