'RELENG_7_0_0_RELEASE'.

This commit was manufactured to restore the state of the 7.0-RELEASE image.

OK'ed by:	imp, core

errmsg() and its table of error messages.

don't support system that implement getcwd(3) with a pipe to /bin/pwd.

o Old-style K&R declarations have been converted to new C89 style
o register has been removed
o prototype for main() has been removed (gcc3 makes it an error)
o int main(int argc, char *argv[]) is the preferred main definition.
o Attempt to not break style(9) conformance for declarations more than
  they already are.
o Change
	int
	foo() {
	...
  to
	int
	foo(void)
	{
	...

__printflike()/__printf0like() to function prototypes, as appropriate.

Reviewed by:	bde, -audit

spaces reserved by the header files it includes.

mkinit.c still produces C code with redundant declarations, although
they are more harmless since they automatically derived from the right
places.

Submitted by: Philippe Charnier <charnier@xp11.frmug.org>