mruby-print/print.c: rename __printstr__ to __printstr

As a convention other internal methods are prefixed by `__`.

mrbgems/mruby-print/mrblib/print.rb

@@ -12,8 +12,8 @@ module Kernel
     i = 0
     len = args.size
     while i < len
-      __printstr__ args[i].inspect
-      __printstr__ "\n"
+      __printstr args[i].inspect
+      __printstr "\n"
       i += 1
     end
     args.__svalue
@@ -25,7 +25,7 @@ module Kernel
     i = 0
     len = args.size
     while i < len
-      __printstr__ args[i].to_s
+      __printstr args[i].to_s
       i += 1
     end
   end
@@ -41,15 +41,15 @@ module Kernel
         puts(*s)
       else
         s = s.to_s
-        __printstr__ s
-        __printstr__ "\n" if (s[-1] != "\n")
+        __printstr s
+        __printstr "\n" if (s[-1] != "\n")
       end
       i += 1
     end
-    __printstr__ "\n" if len == 0
+    __printstr "\n" if len == 0
   end
 
   def printf(*args)
-    __printstr__(sprintf(*args))
+    __printstr(sprintf(*args))
   end
 end

mrbgems/mruby-print/src/print.c

@@ -49,7 +49,7 @@ mrb_printstr(mrb_state *mrb, mrb_value self)
 void
 mrb_mruby_print_gem_init(mrb_state* mrb)
 {
-  mrb_define_method(mrb, mrb->kernel_module, "__printstr__", mrb_printstr, MRB_ARGS_REQ(1));
+  mrb_define_method(mrb, mrb->kernel_module, "__printstr", mrb_printstr, MRB_ARGS_REQ(1));
 }
 
 void