hive: install hcatalog

Closes Homebrew/homebrew#27486.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/hive.rb

@@ -9,7 +9,7 @@ class Hive < Formula
 
   def install
     rm_f Dir["bin/*.bat"]
-    libexec.install %w[bin conf examples lib]
+    libexec.install %w[bin conf examples hcatalog lib scripts]
     bin.write_exec_script Dir["#{libexec}/bin/*"]
   end
 
@@ -18,6 +18,9 @@ class Hive < Formula
     After installation, set $HIVE_HOME in your profile:
       export HIVE_HOME=#{libexec}
 
+    If you want to use HCatalog with Pig, set $HCAT_HOME in your profile:
+      export HCAT_HOME=#{libexec}/hcatalog
+
     You may need to set JAVA_HOME:
       export JAVA_HOME="$(/usr/libexec/java_home)"
     EOS