tweak for compat with broken /bin/sh on AIX ibm.risc

AIX on ibm.risc comes with a broken version of ksh88 as /bin/sh
where the following causes breakage in the parser (spurious syntax
errors):

	(set -o posix) 2>/dev/null && set -o posix

However, prefixing it with 'command' (while keeping the subshell)
circumvents the problem. So, why not.

	(command set -o posix) 2>/dev/null && set -o posix

src/cmd/INIT/crossexec.sh

@@ -19,7 +19,7 @@
 ########################################################################
 : cross compiler a.out execution
 
-(set -o posix) 2>/dev/null && set -o posix
+(command set -o posix) 2>/dev/null && set -o posix
 
 command=crossexec
 

src/cmd/INIT/execrate.sh

@@ -19,7 +19,7 @@
 ########################################################################
 : wrapper for .exe challenged win32 systems/commands
 
-(set -o posix) 2>/dev/null && set -o posix
+(command set -o posix) 2>/dev/null && set -o posix
 
 command=execrate
 

src/cmd/INIT/filter.sh

@@ -19,7 +19,7 @@
 ########################################################################
 : convert command that operates on file args to pipeline filter
 
-(set -o posix) 2>/dev/null && set -o posix
+(command set -o posix) 2>/dev/null && set -o posix
 
 command=filter
 

src/cmd/INIT/hurl.sh

@@ -19,7 +19,7 @@
 ########################################################################
 : copy http url data
 
-(set -o posix) 2>/dev/null && set -o posix
+(command set -o posix) 2>/dev/null && set -o posix
 
 command=hurl
 agent="$command/2009-01-20 (AT&T Research)"

src/cmd/INIT/iffe.sh

@@ -25,7 +25,7 @@
 #
 # NOTE: .exe a.out suffix and [\\/] in path patterns for dos/nt
 
-(set -o posix) 2>/dev/null && set -o posix
+(command set -o posix) 2>/dev/null && set -o posix
 
 command=iffe
 version=2012-07-17 # update in USAGE too #

src/cmd/INIT/ignore.sh

@@ -20,7 +20,7 @@
 # non-ksh script for the nmake ignore prefix
 # @(#)ignore (AT&T Research) 1992-08-11
 
-(set -o posix) 2>/dev/null && set -o posix
+(command set -o posix) 2>/dev/null && set -o posix
 modern_export=`v=; export v=ok 2>/dev/null; echo "$v"`
 
 while	:

src/cmd/INIT/mamprobe.sh

@@ -21,7 +21,7 @@
 # mamprobe - generate MAM cc probe info
 # Glenn Fowler <gsf@research.att.com>
 
-(set -o posix) 2>/dev/null && set -o posix
+(command set -o posix) 2>/dev/null && set -o posix
 
 command=mamprobe
 

src/cmd/INIT/mkdir.sh

@@ -20,7 +20,7 @@
 ########################################################################
 : mkdir for systems that do not support -p : 2002-09-01 :
 
-(set -o posix) 2>/dev/null && set -o posix
+(command set -o posix) 2>/dev/null && set -o posix
 
 MKDIR=mkdir
 CHMOD=chmod

src/cmd/INIT/package.sh

@@ -23,7 +23,7 @@
 
 command=package
 
-(set -o posix) 2>/dev/null && set -o posix
+(command set -o posix) 2>/dev/null && set -o posix
 path=Bad
 case $PATH in
 Bad*)	echo "Cannot be run by zsh in native mode; use a sh symlink to zsh" >&2

src/cmd/INIT/silent.sh

@@ -20,7 +20,7 @@
 # non-ksh stub for the nmake silent prefix
 # @(#)silent (AT&T Research) 1992-08-11
 
-(set -o posix) 2>/dev/null && set -o posix
+(command set -o posix) 2>/dev/null && set -o posix
 modern_export=`v=; export v=ok 2>/dev/null; echo "$v"`
 
 while	:

src/cmd/ksh93/features/math.sh

@@ -24,7 +24,7 @@
 
 case $ZSH_VERSION in
 ?*)	emulate ksh ;;
-*)	(set -o posix) 2>/dev/null && set -o posix ;;
+*)	(command set -o posix) 2>/dev/null && set -o posix ;;
 esac
 
 command=$0

src/lib/libast/comp/conf.sh

@@ -36,7 +36,7 @@
 
 case $ZSH_VERSION in
 ?*)	emulate ksh ;;
-*)	(set -o posix) 2>/dev/null && set -o posix ;;
+*)	(command set -o posix) 2>/dev/null && set -o posix ;;
 esac
 
 LC_ALL=C

src/lib/libast/features/libpath.sh

@@ -22,7 +22,7 @@
 
 case $ZSH_VERSION in
 ?*)	emulate ksh ;;
-*)	(set -o posix) 2>/dev/null && set -o posix ;;
+*)	(command set -o posix) 2>/dev/null && set -o posix ;;
 esac
 
 ok=0

src/lib/libast/features/param.sh

@@ -23,7 +23,7 @@
 
 case $ZSH_VERSION in
 ?*)	emulate ksh ;;
-*)	(set -o posix) 2>/dev/null && set -o posix ;;
+*)	(command set -o posix) 2>/dev/null && set -o posix ;;
 esac
 
 case $# in

src/lib/libast/features/preroot.sh

@@ -23,7 +23,7 @@
 
 case $ZSH_VERSION in
 ?*)	emulate ksh ;;
-*)	(set -o posix) 2>/dev/null && set -o posix ;;
+*)	(command set -o posix) 2>/dev/null && set -o posix ;;
 esac
 
 case $# in

src/lib/libast/features/sig.sh

@@ -23,7 +23,7 @@
 
 case $ZSH_VERSION in
 ?*)	emulate ksh ;;
-*)	(set -o posix) 2>/dev/null && set -o posix ;;
+*)	(command set -o posix) 2>/dev/null && set -o posix ;;
 esac
 
 case $# in