Second attempt at fixing non-bootstrap ARM build

- Revert the change to BuildFeature since the latest version of the zlib
sources package indeed uses the correct "sources" directory.
- Make the fake zlib package for ARM use the same revision number as the
current zlib version (4) so it can use the current version of the source
package instead of some older one.

build/jam/BuildFeatures

@@ -438,7 +438,7 @@ if [ IsPackageAvailable zlib_devel ] {
 		# sources are required for the primary architecture only
 		primary @{
 			file: source zlib_source
-				sources: develop/sources/%portRevisionedName%/source
+				sources: develop/sources/%portRevisionedName%/sources
 		}@
 		;
 

build/jam/repositories/HaikuPorts/arm

@@ -22,8 +22,8 @@ RemotePackageRepository HaikuPorts
 	icu_devel-4.8.1.1-1
 	libsolv-0.3.0_haiku_2013_10_01-1
 	libsolv_devel-0.3.0_haiku_2013_10_01-1
-	zlib-1.2.8-2
-	zlib_devel-1.2.8-2
+	zlib-1.2.8-4
+	zlib_devel-1.2.8-4
 	:
 
 	# source packages