TCL, but not TK

The following patch adds --without-tk switch to 7.0.2's configure.
Currently, if the TK is present at build time, it will be linked
in, which makes it more difficult to build on one's workstation and
deploy on the X11-less server, where TCL is still desirable.

This patches let you disable Tk even if you have it installed and
makes sure the TCL-library is added as a dependency for libpgtcl.
--- interfaces/libpgtcl/Makefile.in    Tue Mar  7 20:58:36 2000
+++ interfaces/libpgtcl/Makefile.in    Wed Sep 20 08:57:28 2000
@@ -29,3 +29,3 @@

-SHLIB_LINK+= $(LIBPQ)
+SHLIB_LINK+= $(LIBPQ) @TCL_LIB_SPEC@

--- configure    Wed Sep 20 08:53:57 2000
+++ configure    Wed Sep 20 09:01:00 2000
@@ -948,2 +948,17 @@

+if test USE_TCL = true
+then
+    echo $ac_n "checking setting USE_TK""... $ac_c" 1>&6
+    echo "configure:952: checking setting USE_TK" >&5
+    # Check whether --with-tk or --without-tk was given.
+    if test "${with_tk+set}" = set; then
+      withval="$with_tk"
+
+        case "$withval" in
+        y | ye | yes)        USE_TK=true; echo "$ac_t""enabled" 1>&6 ;;
+        *)            USE_TK=n; echo "$ac_t""disabled" 1>&6 ;;
+        esac
+    fi
+fi
+

@@ -7090,3 +7105,3 @@
         echo "$ac_t""$TCL_CONFIG_SH" 1>&6
-
+        . ${TCL_CONFIG_SH}
     fi
@@ -7094,3 +7118,5 @@

-USE_TK=$USE_TCL        # If TCL is disabled, disable TK
+USE_TK=${USE_TK:=$USE_TCL}        # If TCL is disabled, disable TK,
+                    # otherwise -- enable unless explicitly
+                    # disabled

@@ -8359,2 +8385,3 @@
 s%@expanded_libdir@%$expanded_libdir%g
+s%@TCL_LIB_SPEC@%$TCL_LIB_SPEC%g