Fixup bz2 extension so it builds as shared and static under win32

ext/bz2/config.w32

@@ -0,0 +1,18 @@
+// $Id$
+// vim:ft=javascript
+
+ARG_WITH("bz2", "BZip2", "no");
+
+if (PHP_BZ2 != "no") {
+	if (CHECK_LIB("libbz2.lib", "bz2", PHP_BZ2) &&
+			CHECK_HEADER_ADD_INCLUDE("bzlib.h", "CFLAGS_BZ2")) {
+		EXTENSION("bz2", "bz2.c");
+		AC_DEFINE('HAVE_BZ2', 1, 'Have BZ2 library');
+		// BZ2 extension does this slightly differently from others
+		if (PHP_BZ2_SHARED) {
+			ADD_FLAG("CFLAGS_BZ2", "/D PHP_BZ2_EXPORTS ");
+		}
+	} else {
+		WARNING("bz2 not enabled; libraries and headers not found");
+	}
+}

ext/bz2/php_bz2.h

@@ -44,16 +44,18 @@ PHP_FUNCTION(bzdecompress);
 
 #ifdef PHP_WIN32
 # ifdef PHP_BZ2_EXPORTS
-# define PHP_BZ2_API __declspec(dllexport)
+#  define PHP_BZ2_API __declspec(dllexport)
+# elif defined(COMPILE_DL_BZ2)
+#  define PHP_BZ2_API __declspec(dllimport)
 # else
-# define PHP_BZ2_API __declspec(dllimport)
+#  define PHP_BZ2_API /* nothing special */
 # endif
 #else
 # define PHP_BZ2_API
 #endif
 
-PHP_BZ2_API PHPAPI php_stream *_php_stream_bz2open(php_stream_wrapper *wrapper, char *path, char *mode, int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC);
-PHP_BZ2_API PHPAPI php_stream *_php_stream_bz2open_from_BZFILE(BZFILE *bz, char *mode, php_stream *innerstream STREAMS_DC TSRMLS_DC);
+PHP_BZ2_API php_stream *_php_stream_bz2open(php_stream_wrapper *wrapper, char *path, char *mode, int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC);
+PHP_BZ2_API php_stream *_php_stream_bz2open_from_BZFILE(BZFILE *bz, char *mode, php_stream *innerstream STREAMS_DC TSRMLS_DC);
 
 #define php_stream_bz2open_from_BZFILE(bz, mode, innerstream)	_php_stream_bz2open_from_BZFILE((bz), (mode), (innerstream) STREAMS_CC TSRMLS_CC)
 #define php_stream_bz2open(wrapper, path, mode, options, opened_path)	_php_stream_bz2open((wrapper), (path), (mode), (options), (opened_path), NULL STREAMS_CC TSRMLS_CC)