Bug 1418425 - Compile zlib as host lib r=glandium

MozReview-Commit-ID: 5jXyVhRI0kD

--HG--
extra : rebase_source : 0d189eb31853f4eb693cc6ffb3188f9104881274

modules/zlib/src/moz.build

@@ -16,6 +16,7 @@ if CONFIG['ZLIB_IN_MOZGLUE']:
 else:
     # The final library is in config/external/zlib
     FINAL_LIBRARY = 'zlib'
+    HostLibrary('hostzlib')
 
 SOURCES += [
     'adler32.c',
@@ -34,3 +35,6 @@ SOURCES += [
     'uncompr.c',
     'zutil.c',
 ]
+
+HOST_SOURCES = SOURCES
+