Handle visibility of binary code symbols correctly for R releases 3.3…

….0 through 3.3.3

pkg/DESCRIPTION

@@ -2,7 +2,7 @@ Package: memisc
 Type: Package
 Title: Management of Survey Data and Presentation of Analysis Results
 Version: 0.99.16.3
-Date: 2018-10-22
+Date: 2018-10-23
 Author: Martin Elff (with contributions from Christopher N. Lawrence, Dave Atkins, Jason W. Morgan, Achim Zeileis)
 Maintainer: Martin Elff <memisc@elff.eu>
 Description: An infrastructure for the management of survey data including

pkg/inst/ChangeLog

@@ -1,11 +1,14 @@
+2018-10-23:
+   - Handle visibility of binary code symbols correctly for R releases 3.3.0 through 3.3.3
+
 2018-10-22:
    - Defined dollar and double-bracket operators for 'importer' objects to facilitate
      creating codebooks for individual variables.
 
 2018-10-20:
    - The 'subset' method for 'importer' objects now accepts the names of
      variables to be selected also as a character vector.
-   - Fixed 'format_html' for codebooks of data frames with factors.  
+   - Fixed 'format_html' for codebooks of data frames with factors.
 
 2018-10-15:
    - A 'setCodeplan' and 'codeplan<-' assignment function is created that
@@ -15,7 +18,7 @@
 2018-10-14:
    - A 'codeplan' function creates a data frame that
      describes the structure of an "importer" or "data.set" object.
-	
+
 2018-10-05:
    - 'mtable' objects exported to HTML now include a legend for significance symbols.
 

pkg/src/init-memisc.c

@@ -1,7 +1,6 @@
 #include "memisc.h"
 #include <Rversion.h>
 
-#if R_VERSION >= R_Version(3,4,0)
 #include <R_ext/Visibility.h>
 #include <R_ext/Rdynload.h>
 void attribute_visible R_init_memisc(DllInfo *dll)
@@ -10,12 +9,3 @@ void attribute_visible R_init_memisc(DllInfo *dll)
 		R_useDynamicSymbols(dll, FALSE);
 
 }
-#else
-#include <R_ext/Rdynload.h>
-void R_init_memisc(DllInfo *dll)
-{
-    R_registerRoutines(dll, NULL, CallMethods, NULL, NULL);
-		R_useDynamicSymbols(dll, FALSE);
-
-}
-#endif