Patch by Sergei Golovan allows to specify TCL_PACKAGE_PATH at configure stage
without adding /usr/lib to it. It helps to put the policy compliant value to
::tcl_pkgPath variable and to TCL_PACKAGE_PATH variable in tclConfig.sh.

--- tcl8.5-8.5.8.orig/unix/configure
+++ tcl8.5-8.5.8/unix/configure
@@ -18945,9 +18945,9 @@
     test -z "$TCL_MODULE_PATH"  && \
 	TCL_MODULE_PATH="~/Library/Tcl /Library/Tcl /System/Library/Tcl"
 elif test "$prefix/lib" != "$libdir"; then
-    TCL_PACKAGE_PATH="${libdir} ${prefix}/lib ${TCL_PACKAGE_PATH}"
+    test -z "$TCL_PACKAGE_PATH" && TCL_PACKAGE_PATH="${libdir} ${prefix}/lib"
 else
-    TCL_PACKAGE_PATH="${prefix}/lib ${TCL_PACKAGE_PATH}"
+    test -z "$TCL_PACKAGE_PATH" && TCL_PACKAGE_PATH="${prefix}/lib"
 fi
 
 #--------------------------------------------------------------------
--- tcl8.5-8.5.8.orig/unix/configure.in
+++ tcl8.5-8.5.8/unix/configure.in
@@ -833,9 +833,9 @@
     test -z "$TCL_MODULE_PATH"  && \
 	TCL_MODULE_PATH="~/Library/Tcl /Library/Tcl /System/Library/Tcl"
 elif test "$prefix/lib" != "$libdir"; then
-    TCL_PACKAGE_PATH="${libdir} ${prefix}/lib ${TCL_PACKAGE_PATH}"
+    test -z "$TCL_PACKAGE_PATH" && TCL_PACKAGE_PATH="${libdir} ${prefix}/lib"
 else
-    TCL_PACKAGE_PATH="${prefix}/lib ${TCL_PACKAGE_PATH}"
+    test -z "$TCL_PACKAGE_PATH" && TCL_PACKAGE_PATH="${prefix}/lib"
 fi
 
 #--------------------------------------------------------------------