Rename erb.so to erb/escape.so

Author: k0kubun

Rakefile

@@ -9,7 +9,9 @@ end
 
 if RUBY_ENGINE != 'jruby'
   require 'rake/extensiontask'
-  Rake::ExtensionTask.new('erb')
+  Rake::ExtensionTask.new(:escape) do |ext|
+    ext.lib_dir = 'lib/erb'
+  end
   task test: :compile
 end
 

ext/erb/erb.c ext/erb/escape.cext/erb/erb.c renamed to ext/erb/escape.c

@@ -1,2 +1,2 @@
 require 'mkmf'
-create_makefile 'erb'
+create_makefile 'erb/escape'