cmake: make library version number match up with autotools build

lib/CMakeLists.txt

diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 9223920..f7dbb4e 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -197,7 +197,7 @@
 ENDIF(NOT HAVE_MKSTEMP)
 
 ADD_LIBRARY(zip ${LIBZIP_SOURCES} ${LIBZIP_EXTRA_FILES} ${LIBZIP_OPSYS_FILES})
-SET_TARGET_PROPERTIES(zip PROPERTIES VERSION 3.0 SOVERSION 3 )
+SET_TARGET_PROPERTIES(zip PROPERTIES VERSION 5.0 SOVERSION 5)
 TARGET_LINK_LIBRARIES(zip ${ZLIB_LIBRARY} ${OPTIONAL_LIBRARY})
 INSTALL(TARGETS zip
   RUNTIME DESTINATION bin