<build>package: attribute iteration, license dir

PackageWriterImpl:
* Iterate through attributes using fs_read_attr_dir() instead of
  readdir(). Makes it work correctly on the build platform.
* On the build platform look up the system licenses in their source
  directory rather than based on find_directory().

src/build/libpackage/Jamfile

@@ -7,6 +7,17 @@ SEARCH_SOURCE += [ FDirName $(HAIKU_TOP) src kits package hpkg ] ;
 
 USES_BE_API on libpackage_build.so = true ;
 
+
+{
+	# The package writer needs to know where the license files are located.
+	local dataDir = [ FDirName $(HAIKU_TOP) data system data ] ;
+	local defines = [ FDefines
+		HAIKU_BUILD_SYSTEM_DATA_DIRECTORY="\\\"$(dataDir)\\\""
+	] ;
+	ObjectC++Flags PackageWriterImpl.cpp : $(defines) ;
+}
+
+
 HPKG_SOURCES =
 	BlockBufferCache.cpp
 	BlockBufferCacheImpl.cpp

src/kits/package/hpkg/PackageWriterImpl.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2009, Ingo Weinhold, [email protected].
+ * Copyright 2009-2011, Ingo Weinhold, [email protected].
  * Copyright 2011, Oliver Tappe <[email protected]>
  * Distributed under the terms of the MIT License.
  */
@@ -336,7 +336,11 @@ PackageWriterImpl::_CheckLicenses()
 {
 	BPath systemLicensePath;
 	status_t result
+#ifdef HAIKU_TARGET_PLATFORM_HAIKU
 		= find_directory(B_SYSTEM_DATA_DIRECTORY, &systemLicensePath);
+#else
+		= systemLicensePath.SetTo(HAIKU_BUILD_SYSTEM_DATA_DIRECTORY);
+#endif
 	if (result != B_OK) {
 		fListener->PrintError("unable to find system data path!\n");
 		return result;
@@ -706,7 +710,7 @@ PackageWriterImpl::_AddEntry(int dirFD, Entry* entry, const char* fileName,
 	if (DIR* attrDir = fs_fopen_attr_dir(fd)) {
 		CObjectDeleter<DIR, int> attrDirCloser(attrDir, fs_close_attr_dir);
 
-		while (dirent* entry = readdir(attrDir)) {
+		while (dirent* entry = fs_read_attr_dir(attrDir)) {
 			attr_info attrInfo;
 			if (fs_stat_attr(fd, entry->d_name, &attrInfo) < 0) {
 				fListener->PrintError(