Use $(SHELL) and $(KORNSHELL) for shell scripts

Introduce KORNSHELL make variable to point
to the implementation of the Korn Shell.

Use $(SHELL) or $(KORNSHELL) explicitly for
make programs that do not automatically call
shell scripts from the current directory.

cde/config/cf/FreeBSD.cf

@@ -30,6 +30,8 @@ XCOMM operating system:  OSName (OSMajorVersion./**/OSMinorVersion./**/OSTeenyVe
 #endif
 #undef  InstallCmd
 #define InstallCmd		/usr/bin/install
+#undef	KornShell
+#define	KornShell		/usr/local/bin/ksh93
 
 #define UseGas			YES
 #ifndef GccUsesGas

cde/config/cf/Imake.tmpl

@@ -180,6 +180,9 @@ XCOMM the platform-specific parameters - edit site.def to change
 #ifndef BourneShell			/* to force shell in makefile */
 #define BourneShell		/bin/sh
 #endif
+#ifndef KornShell
+#define KornShell		/bin/ksh
+#endif
 #ifndef ConstructMFLAGS
 #if SystemV
 #define ConstructMFLAGS		YES	/* build MFLAGS from MAKEFLAGS */
@@ -889,6 +892,7 @@ XCOMM the platform-specific parameters - edit site.def to change
 
           PATHSEP = PathSeparator
             SHELL = BourneShell
+        KORNSHELL = KornShell
 
               TOP = TOPDIR
       CURRENT_DIR = CURDIR

cde/config/cf/README

@@ -90,6 +90,7 @@ Imake.tmpl provides defaults for the following variables:
 	InstPgmFlags		install flags for normal programs
 	InstUidFlags		install flags for xterm to chown /dev/ptys
 	InstallCmd		command to install files
+	KornShell		command used to run Korn Shell
 	Krb5Includes		where to include Kerberos header files from
 	Krb5Libraries		where to load Kerberos libraries from
 	LdCmd			command to run loader