Get rid of useless and pernicious -L/usr/lib


diff -Naur mysql-connector-odbc-5.1.5r1144.orig/configure.in mysql-connector-odbc-5.1.5r1144/configure.in
--- mysql-connector-odbc-5.1.5r1144.orig/configure.in	2008-04-16 14:01:58.000000000 -0400
+++ mysql-connector-odbc-5.1.5r1144/configure.in	2009-01-14 15:37:18.000000000 -0500
@@ -84,7 +84,7 @@
   else
    LTDL_LIB="-L$withval/lib -lltdl"
   fi
-], [LTDL_LIB="-L/usr/lib -lltdl"])
+], [LTDL_LIB="-lltdl"])
 AC_SUBST(LTDL_LIB)
 
 dnl AC_CHECK_LIB(ltdl, lt_dlinit, [],