Use KORNSHELL variable instead of /bin/ksh

This patch removes instances of hardcoded
invocation of /bin/ksh and allows to
replace it with, for, example,
/usr/local/bin/ksh93

Also "ksh93" is accepted whenever "ksh" is.

Tested using the following /bin/ksh:

----8<----
WHAT=`ps -o command= -p $PPID`
msg="Something tried to call /bin/ksh: $PPID: $WHAT"
print -u2 "$msg"
logger user.warn "$msg"
exit 99
----8<----
(Warning: first two lines are FreeBSD specific)

Scripts from Makefiles should now be executed either
with

$(KORNSHELL) korn-shell-script

or

$(SHELL) bourne-shell-script

therefore #!/bin/ksh has not been changed everywhere.

/usr/dt/bin/ scripts have been converted (e.g. Xsession)

Whenever possible Imake and CPP facilities have been used.

For C and C++ programs KORNSHELL needs to be defined to
"/path/to/your/ksh" (with quotes) so that it can make
a valid C constant.

Therefore, when adding KORNSHELL to Imakefile for C files,
you have to add

CXXEXTRA_DEFINES = -DKORNSHELL=\"$(KORNSHELL)\"

or similar (for example, see programs/dtprintinfo)

But for simple shell script substitution we usually change

 LOCAL_CPP_DEFINES = -DCDE_CONFIGURATION_TOP=$(CDE_CONFIGURATION_TOP) \
                     -DCDE_INSTALLATION_TOP=$(CDE_INSTALLATION_TOP) \
                     -DCDE_LOGFILES_TOP=$(CDE_LOGFILES_TOP)

to:

 LOCAL_CPP_DEFINES = -DCDE_CONFIGURATION_TOP=$(CDE_CONFIGURATION_TOP) \
                     -DCDE_INSTALLATION_TOP=$(CDE_INSTALLATION_TOP) \
                     -DCDE_LOGFILES_TOP=$(CDE_LOGFILES_TOP) \
                     -DKORNSHELL=$(KORNSHELL) \
                     -DXPROJECTROOT=X11ProjectRoot

since we don't want quotes for shell scripts.

cde/programs/dtlogin/config/0015.sun.env.src

@@ -1,4 +1,4 @@
-XCOMM!/bin/ksh 
+XCOMM!KORNSHELL
 XCOMM ####################################################################
 XCOMM ##  File:              0015.sun.env.src 
 XCOMM ##

cde/programs/dtlogin/config/0050.dtxmodmap.src

@@ -1,4 +1,4 @@
-XCOMM!/bin/ksh
+XCOMM!KORNSHELL
 XCOMM ####################################################################
 XCOMM ##  File:              0050.dtxmodmap
 XCOMM ##

cde/programs/dtlogin/config/0060.dtsysenv.src

@@ -1,4 +1,4 @@
-XCOMM !/usr/bin/ksh
+XCOMM !KORNSHELL
 XCOMM ####################################################################
 XCOMM ##  File:              0060.srcsysenv
 XCOMM ##

cde/programs/dtlogin/config/Imakefile

@@ -19,6 +19,7 @@ Xservers:
 LOCAL_CPP_DEFINES = -DCDE_CONFIGURATION_TOP=$(CDE_CONFIGURATION_TOP) \
                     -DCDE_INSTALLATION_TOP=$(CDE_INSTALLATION_TOP) \
                     -DCDE_LOGFILES_TOP=$(CDE_LOGFILES_TOP) \
+                    -DKORNSHELL=$(KORNSHELL) \
                     -DXPROJECTROOT=X11ProjectRoot
 
 

cde/programs/dtlogin/config/Xreset.src

@@ -1,4 +1,4 @@
-XCOMM! /bin/ksh
+XCOMM! KORNSHELL
 XCOMM ##########################################################################
 XCOMM
 XCOMM   Xreset

cde/programs/dtlogin/config/Xsession.ow.src

@@ -1,4 +1,4 @@
-XCOMM!/bin/ksh 
+XCOMM!KORNSHELL
 XCOMM $XConsortium: Xsession.ow.src /main/3 1996/11/19 11:41:19 drk $
 XCOMM ####################################################################
 XCOMM ##  File:              Xsession.ow

cde/programs/dtlogin/config/Xsession.ow2.src

@@ -1,4 +1,4 @@
-XCOMM!/bin/ksh 
+XCOMM!KORNSHELL
 XCOMM $XConsortium: Xsession.ow2.src /main/3 1996/11/19 11:41:57 drk $
 XCOMM ####################################################################
 XCOMM ##  File:              Xsession.ow2

cde/programs/dtlogin/config/Xsession.src

@@ -1,4 +1,4 @@
-XCOMM! /bin/ksh
+XCOMM! KORNSHELL
 XCOMM ##########################################################################
 XCOMM
 XCOMM   Xsession
@@ -422,7 +422,7 @@ XCOMM ##########################################################################
   HASH source the .dtprofile.
   HASH
   if [ -f $HOME/$DTPROFILE ]; then
-    dtprofile_errors=`/bin/ksh -n $HOME/$DTPROFILE 2>&1`
+    dtprofile_errors=`KORNSHELL -n $HOME/$DTPROFILE 2>&1`
     if [ "0" = "$?" ]; then
       Log "sourcing $HOME/$DTPROFILE..."
       . $HOME/$DTPROFILE
@@ -512,7 +512,7 @@ StartFirst()
   if [ "$DTSOURCEPROFILE" = "true" ]
   then
     case ${SHELL##*/} in
-       sh | ksh | dtksh) shellprofile="$HOME/.profile";;
+       sh | ksh | ksh93 | dtksh) shellprofile="$HOME/.profile";;
        bash) shellprofile="$HOME/.bash_profile";;
        csh | tcsh) shellprofile="$HOME/.login";;
        *) Log "non-standard shell $SHELL"
@@ -553,7 +553,7 @@ StartFirst()
 
     case ${SHELL##*/} in
 
-      sh | bash | ksh | dtksh)
+      sh | bash | ksh | ksh93 | dtksh)
         dotprofile_errors=`$SHELL -n $shellprofile 2>&1`
         if [ "0" = "$?" ]; then
           source_profile=". $shellprofile"
@@ -589,7 +589,7 @@ StartFirst()
                            PATH=/usr/dt/bin:\$PATH $tooltalk;   \
                            $startup > $dtstart_sessionlogfile 2>&1" ;;
 
-      ksh | dtksh) $SHELL -c "$source_profile; \
+      ksh | ksh93 | dtksh) $SHELL -c "$source_profile; \
 			   unset DT; \
 			   $dtdbcache; \
                            PATH=/usr/dt/bin:\$PATH $tooltalk;\

cde/programs/dtlogin/config/Xsetup.src

@@ -1,4 +1,4 @@
-XCOMM!/bin/ksh
+XCOMM!KORNSHELL
 XCOMM $XConsortium: Xsetup.src /main/8 1996/07/02 11:40:32 mgreess $
 XCOMM ##########################################################################
 XCOMM

cde/programs/dtlogin/config/Xstartup.src

@@ -1,4 +1,4 @@
-XCOMM! /bin/ksh
+XCOMM! KORNSHELL
 XCOMM ##########################################################################
 XCOMM
 XCOMM  Xstartup

cde/programs/dtlogin/config/dtlslocale.src

@@ -1,4 +1,4 @@
-XCOMM!/bin/ksh
+XCOMM!KORNSHELL
 XCOMM $XConsortium: dtlslocale.src /main/6 1996/11/19 11:42:40 drk $
 XCOMM
 XCOMM  Common Desktop Environment