Revert "Make the default SETCAP value to be /sbin/setcap"

This reverts commit 2869cfb8.

SETCAP isn't a command-line after all, it's a build target.

install/GNUmakefile

@@ -12,7 +12,6 @@
 # SYMLINK = Don't copy binaries, rather create symlinks in $(SBBSDIR)/exec
 # SBBSDIR = Directory to do install to
 # REPODIR = Directory where source files are cloned
-# SETCAP = First portion of set file capabilities (setcap) command-line (e.g. /sbin/setcap)
 # NOCAP = Set to defeat sbbs3 bind-capabilities (setcap) build target on Linux
 # bcc = Set to use Borland compiler
 # os = Set to the OS name (Not required)
@@ -82,7 +81,7 @@ MKFLAGS	+=	os=$(os)
 
 ifndef NOCAP
 ifeq ($(os),linux)
-	SETCAP 	:=	/sbin/setcap
+	SETCAP 	:=	setcap
 endif
 endif