Use tiny-tds 2.1.0.pre2 with defncopy wrapper (#619)

Author: coderjoe

.travis.yml

@@ -4,7 +4,7 @@ services:
   - docker
 env:
   global:
-    - TINYTDS_VERSION=2.1.0.pre1
+    - TINYTDS_VERSION=2.1.0.pre2
     - ACTIVERECORD_UNITTEST_HOST=localhost
     - ACTIVERECORD_UNITTEST_DATASERVER=localhost
 rvm:

appveyor.yml

@@ -2,7 +2,7 @@ init:
   - SET PATH=C:\Ruby%ruby_version%\bin;%PATH%
   - SET PATH=C:\MinGW\msys\1.0\bin;%PATH%
   - SET RAKEOPT=-rdevkit
-  - SET TINYTDS_VERSION=2.1.0.pre1
+  - SET TINYTDS_VERSION=2.1.0.pre2
 clone_depth: 5
 skip_tags: true
 matrix:

circle.yml

@@ -6,7 +6,7 @@ general:
 machine:
   environment:
     PATH: /opt/local/bin:${PATH}
-    TINYTDS_VERSION: 2.1.0.pre1
+    TINYTDS_VERSION: 2.1.0.pre2
     ACTIVERECORD_UNITTEST_HOST: localhost
     ACTIVERECORD_UNITTEST_DATASERVER: localhost
   services:

lib/active_record/tasks/sqlserver_database_tasks.rb

@@ -50,7 +50,7 @@ def purge
 
       def structure_dump(filename, extra_flags)
         command = [
-          "defncopy",
+          "defncopy-ttds",
           "-S #{Shellwords.escape(configuration['host'])}",
           "-D #{Shellwords.escape(configuration['database'])}",
           "-U #{Shellwords.escape(configuration['username'])}",