oss-fuzzshark: use install directory for headers. Install missing one.

From compilation log:
  epan/ipv4.h:19:10: fatal error: 'wsutil/inet_ipv4.h' file not found
  tools/oss-fuzzshark/fuzzshark.c:27:10: fatal error: 'version_info.h' file not found

Change-Id: I3e147e014ae398ae07e64aec5a6535a8f9e357a3
Reviewed-on: https://code.wireshark.org/review/27076
Petri-Dish: Jakub Zawadzki <darkjames-ws@darkjames.pl>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>

CMakeLists.txt

@@ -3035,6 +3035,7 @@ set(SHARK_PUBLIC_HEADERS
 	ws_compiler_tests.h
 	ws_diag_control.h
 	ws_symbol_export.h
+	version_info.h
 )
 
 if(NOT WIN32)

tools/oss-fuzzshark/build.sh

@@ -32,8 +32,7 @@ generate_fuzzer()
 
   fuzzer_name="fuzzshark_$1"
 
-  # -I$SRC/wireshark is correct, wireshark don't install header files.
-  $CC $CFLAGS -I $SRC/wireshark/ `pkg-config --cflags glib-2.0` \
+  $CC $CFLAGS -I $WIRESHARK_INSTALL_PATH/include/wireshark/ `pkg-config --cflags glib-2.0` \
       $SRC/wireshark/tools/oss-fuzzshark/fuzzshark.c \
       -c -o $WORK/${fuzzer_name}.o \
       $fuzzer_cflags -DFUZZ_DISSECTOR_LIST="$DISSECTOR_LIST"

wsutil/CMakeLists.txt

@@ -40,6 +40,7 @@ set(WSUTIL_PUBLIC_HEADERS
 	frequency-utils.h
 	g711.h
 	inet_addr.h
+	inet_ipv4.h
 	inet_ipv6.h
 	interface.h
 	jsmn.h