Get rid of useless path from seach path

ext/pgsql/config.m4

@@ -19,14 +19,14 @@ if test "$PHP_PGSQL" != "no"; then
   fi
   
   for i in $PGSQL_SEARCH_PATHS; do
-    for j in include include/pgsql include/postgres include/postgresql src/include/libpq ""; do
+    for j in include include/pgsql include/postgres include/postgresql ""; do
       if test -r "$i/$j/libpq-fe.h"; then
         PGSQL_INC_BASE=$i
         PGSQL_INCLUDE=$i/$j
       fi
     done
 
-    for j in lib lib/pgsql lib/postgres lib/postgresql src/interfaces/libpq ""; do
+    for j in lib lib/pgsql lib/postgres lib/postgresql ""; do
       if test -f "$i/$j/libpq.so"; then 
         PGSQL_LIBDIR=$i/$j
       fi