Fix build on 64-bit Haiku

- Fix path to look for libnetwork to work also on non-hybrid systems
- Remove references to /boot/common as it is not used anymore
- Fix a few type errors
- Use compiler provided va_copy when available

beos/Makefile.target

@@ -40,16 +40,8 @@ ifeq ($(HOST),beos)
   ifneq ($(wildcard /boot/develop/lib/*/libzeta.so),)
     LDFLAGS += -lzeta
   endif
-  ifneq ($(wildcard /boot/system/develop/lib/*/libnetwork.so),)
+  ifneq ($(wildcard /boot/system/develop/lib/libnetwork.so),)
       # Haiku
-      CFLAGS += -I/boot/common/include		\
-		-I/boot/common/include/hubbub	\
-		-I/boot/common/include/libcss	\
-		-I/boot/common/include/parserutils
-      CXXFLAGS += -I/boot/common/include		\
-		-I/boot/common/include/hubbub	\
-		-I/boot/common/include/libcss	\
-		-I/boot/common/include/parserutils
       NETLDFLAGS := -lnetwork
   else
     ifneq ($(wildcard /boot/develop/lib/*/libbind.so),)

beos/filetype.cpp

@@ -72,7 +72,7 @@ void beos_fetch_filetype_init(void)
 			continue;
 		}
 		// the mime db doesn't know about it yet
-		BMessage extensions(0UL);
+		BMessage extensions('exts');
 		if (default_types[i].ext1)
 			extensions.AddString("extensions", default_types[i].ext1);
 		if (default_types[i].ext2)

beos/window.cpp

@@ -1275,7 +1275,7 @@ void gui_get_clipboard(char **buffer, size_t *length)
 		clip = be_clipboard->Data();
 		if (clip) {
 			const char *text;
-			int32 textlen;
+			ssize_t textlen;
 			if (clip->FindData("text/plain", B_MIME_TYPE, 
 				(const void **)&text, &textlen) >= B_OK) {
 				*buffer = (char *)malloc(textlen);

utils/talloc.c

@@ -55,7 +55,7 @@
 #include "replace.h"
 #else
 #include <stdarg.h>
-#if !defined(__BEOS__) && !defined(__HAIKU__) && __GNUC__ > 2
+#if !defined(__BEOS__) && __GNUC__ > 2
 /* Assume we've got va_copy */
 #define HAVE_VA_COPY
 #include <string.h>