Avoid hard-coding a path to ksh in scripts that are executed directly by

the test harness. This is a problem in many of the *.ksh test scripts as
well, but those scripts are executed using a shell whose path is specified
in dtest.pl, so there's no need to modify them.

MFC after:	1 week

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/err.D_PDESC_ZERO.badlib.exe

@@ -1,4 +1,4 @@
-#!/bin/ksh
+#!/usr/bin/env ksh
 #
 # CDDL HEADER START
 #

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/err.D_PROC_FUNC.badfunc.exe

@@ -1,4 +1,4 @@
-#!/bin/ksh
+#!/usr/bin/env ksh
 #
 # CDDL HEADER START
 #

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/err.D_PROC_LIB.libdash.exe

@@ -1,4 +1,4 @@
-#!/bin/ksh
+#!/usr/bin/env ksh
 #
 # CDDL HEADER START
 #

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/err.D_PROC_NAME.alldash.exe

@@ -1,4 +1,4 @@
-#!/bin/ksh
+#!/usr/bin/env ksh
 #
 # CDDL HEADER START
 #

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/err.D_PROC_NAME.badname.exe

@@ -1,4 +1,4 @@
-#!/bin/ksh
+#!/usr/bin/env ksh
 #
 # CDDL HEADER START
 #

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/err.D_PROC_NAME.globdash.exe

@@ -1,4 +1,4 @@
-#!/bin/ksh
+#!/usr/bin/env ksh
 #
 # CDDL HEADER START
 #

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/err.D_PROC_OFF.toobig.exe

@@ -1,4 +1,4 @@
-#!/bin/ksh
+#!/usr/bin/env ksh
 #
 # CDDL HEADER START
 #

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/tst.coverage.exe

@@ -1,4 +1,4 @@
-#!/usr/bin/ksh
+#!/usr/bin/env ksh
 #
 # CDDL HEADER START
 #

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/tst.emptystack.exe

@@ -1,4 +1,4 @@
-#!/usr/bin/ksh
+#!/usr/bin/env ksh
 #
 # CDDL HEADER START
 #

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/plockstat/tst.available.exe

@@ -1,4 +1,4 @@
-#!/usr/bin/ksh
+#!/usr/bin/env ksh
 #
 # CDDL HEADER START
 #

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/plockstat/tst.libmap.exe

@@ -1,4 +1,4 @@
-#!/usr/bin/ksh
+#!/usr/bin/env ksh
 #
 # CDDL HEADER START
 #