Patch fixes search for aolserver4 headers.

--- tclthread-2.6.7.orig/configure
+++ tclthread-2.6.7/configure
@@ -6204,7 +6204,7 @@
 else
 
     if test x"${with_aolserver}" != x ; then
-        if test -f "${with_aolserver}/include/ns.h" ; then
+        if test -f "${with_aolserver}/include/aolserver4/ns.h" ; then
             ac_cv_c_aolserver=`(cd ${with_aolserver}; pwd)`
         else
             { { echo "$as_me:$LINENO: error: ${with_aolserver} directory doesn't contain ns.h" >&5
@@ -6222,7 +6222,7 @@
         AOL_DIR=${ac_cv_c_aolserver}
         echo "$as_me:$LINENO: result: found AOLserver in $AOL_DIR" >&5
 echo "${ECHO_T}found AOLserver in $AOL_DIR" >&6
-        AOL_INCLUDES="-I\"${AOL_DIR}/include\""
+        AOL_INCLUDES="-I\"${AOL_DIR}/include/aolserver4\""
         if test "`uname -s`" = Darwin ; then
             aollibs=`ls ${AOL_DIR}/lib/libns* 2>/dev/null`
             if test x"$aollibs" != x ; then
--- tclthread-2.6.7.orig/aolserver.m4
+++ tclthread-2.6.7/aolserver.m4
@@ -31,7 +31,7 @@
 
     AC_CACHE_VAL(ac_cv_c_aolserver,[
     if test x"${with_aolserver}" != x ; then
-        if test -f "${with_aolserver}/include/ns.h" ; then
+        if test -f "${with_aolserver}/include/aolserver4/ns.h" ; then
             ac_cv_c_aolserver=`(cd ${with_aolserver}; pwd)`
         else
             AC_MSG_ERROR([${with_aolserver} directory doesn't contain ns.h])
@@ -43,7 +43,7 @@
     else
         AOL_DIR=${ac_cv_c_aolserver}
         AC_MSG_RESULT([found AOLserver in $AOL_DIR])
-        AOL_INCLUDES="-I\"${AOL_DIR}/include\""
+        AOL_INCLUDES="-I\"${AOL_DIR}/include/aolserver4\""
         if test "`uname -s`" = Darwin ; then
             aollibs=`ls ${AOL_DIR}/lib/libns* 2>/dev/null`
             if test x"$aollibs" != x ; then