freetype: builds against the 2.4.6 optional package.

* added optional feature package for freetype 2.4.6 gcc4/gcc2 x86 and gcc4 ppc.
* FT_CONFIG_OPTION_SUBPIXEL_RENDERING is disabled, --include-patented-code doesn't
  change this setting anymore. This would require different packages.
* drop freetype sources and headers from the tree.
* fix decorators, test app server and appearance to use feature package headers.
* hybrid build untested.

build/jam/HaikuImage

@@ -84,7 +84,6 @@ SYSTEM_DEMOS = BSnow Chart Clock Cortex FontDemo $(X86_ONLY)GLTeapot
 SYSTEM_LIBS =
 	libbe.so libbsd.so libbnetapi.so
 	libdebug.so libdevice.so
-	libfreetype.so
 	libgame.so $(X86_ONLY)libGL.so libgnu.so
 	libjpeg.so
 	liblocale.so
@@ -96,6 +95,7 @@ SYSTEM_LIBS =
 	libtextencoding.so libtiff.so libtracker.so libtranslation.so
 	libz.so
 	$(HAIKU_SHARED_LIBSTDC++) $(HAIKU_SHARED_LIBSUPC++)
+	$(HAIKU_FREETYPE_CURRENT_LIB)
 ;
 PRIVATE_SYSTEM_LIBS =
 	libalm.so
@@ -316,6 +316,12 @@ SYSTEM_LIBS_ALIASES =
 	$(SYSTEM_LIBS_LIBGL_ALIASES)
 ;
 
+# libfreetype.so links to the current freetype lib
+AddSymlinkToHaikuHybridImage system lib : $(HAIKU_FREETYPE_CURRENT_LIB:BS)
+	: $(HAIKU_FREETYPE_CURRENT_LINK) : : true ;
+AddSymlinkToHaikuHybridImage system lib : $(HAIKU_FREETYPE_CURRENT_LINK)
+	: libfreetype.so : : true ;
+
 # servers
 AddFilesToHaikuImage system servers : $(SYSTEM_SERVERS) ;