Revision 241135

MFC r240682

if a file in plist starts with / then do not prefix it with "prefix" [1]
pkg info -g returns 1 if a file mismatch [2]
flush stdout in pkg info -g [3]
clean up quiet mode (-q | --quiet) output of pkg_version(1) [4]
fix missing error call in uname check added to pkg_version(1) [5]
fix pkg_add(1) fails to install with -C from bad path [6]
only resolve path from pkg_add(1) -p if the given prefix do not start with a '/' [7]

PR:		bin/13128 [1]
		bin/139015 [2]
		bin/113702 [3]
		bin/142570 [4]
		bin/146857 [5]
		bin/157543 [6]
Submitted by:	cy [1]
		Anton Yuzhaninov <citrin@citrin.ru> [2]
		Ighighi <ighighi@gmail.com> [3]
		"N.J. Mann" <njm@njm.me.uk> [4]
		gcooper [5]
		David Naylor <naylor.b.david@gmail.com> [6]
		netchild [7]