updated Slack, Link, and Redis contrib modules

wcm_base.make

@@ -63,7 +63,7 @@ projects[google_tag][subdir] = contrib
 projects[jquery_update][version] = 3.0-alpha5
 projects[jquery_update][subdir] = contrib
 
-projects[link][version] = 1.6
+projects[link][version] = 1.7
 projects[link][subdir] = contrib
 
 projects[linkchecker][version] = 1.x-dev
@@ -136,7 +136,7 @@ projects[realname][subdir] = contrib
 projects[r4032login][version] = 1.8
 projects[r4032login][subdir] = contrib
 
-projects[redis][version] = 3.17
+projects[redis][version] = 3.18
 projects[redis][subdir] = contrib
 
 projects[rules][version] = 2.12
@@ -149,7 +149,7 @@ projects[search_api_solr][version] = 1.14
 projects[search_api_solr][subdir] = contrib
 projects[search_api_solr][patch][1414838] = http://drupal.org/files/issues/search_api_solr-partial_word_matching-1414838-21.patch
 
-projects[slack][version] = 1.6
+projects[slack][version] = 1.7
 projects[slack][subdir] = contrib
 
 projects[smart_trim][version] = 1.5