profilesafe: Added zip deflate/inflate

Stack of files can now deflate/inflate using zip
library, unfortunately have to use direct due to
Deflater/Inflater not being available, had to add
linking against zip.lib. Checked compressed and
uncompressed creation/usage of backup stack. Also
warnings and clang errors corrected.

Change-Id: Ieb059baeea323bb48ec5b1cf6b8df09da97cfb93

comphelper/Library_comphelper.mk

@@ -40,6 +40,7 @@ $(eval $(call gb_Library_use_externals,comphelper,\
     boost_headers \
     icuuc \
     icu_headers \
+    zlib \
 ))
 
 $(eval $(call gb_Library_use_libraries,comphelper,\