count_by_sql: don't use table alias with any adapters starting with "…

…oracle"

Partially resolves the mislav#237 problem. With JDBC, it still remains an issue
because the adapter shows up as "jdbc", not "oracle" or "oci"

lib/will_paginate/finder.rb

@@ -141,7 +141,7 @@ def paginate_by_sql(sql, options)
             count_query = original_query.sub /\bORDER\s+BY\s+[\w`,\s]+$/mi, ''
             count_query = "SELECT COUNT(*) FROM (#{count_query})"
 
-            unless ['oracle', 'oci'].include?(self.connection.adapter_name.downcase)
+            unless self.connection.adapter_name =~ /^(oracle|oci$)/i
               count_query << ' AS count_table'
             end
             # perform the count query