Merge branch 'tc/zlib-ng-fix'

"git version --build-options" stopped showing zlib version by
mistake due to recent refactoring, which has been corrected.

* tc/zlib-ng-fix:
  help: print zlib-ng version number
  help: include git-zlib.h to print zlib version

Author: gitster

help.c

@@ -2,6 +2,7 @@
 #define DISABLE_SIGN_COMPARE_WARNINGS
 
 #include "git-compat-util.h"
+#include "git-zlib.h"
 #include "config.h"
 #include "builtin.h"
 #include "exec-cmd.h"
@@ -797,7 +798,9 @@ void get_version_info(struct strbuf *buf, int show_build_options)
 #if defined OPENSSL_VERSION_TEXT
 		strbuf_addf(buf, "OpenSSL: %s\n", OPENSSL_VERSION_TEXT);
 #endif
-#if defined ZLIB_VERSION
+#if defined ZLIBNG_VERSION
+		strbuf_addf(buf, "zlib-ng: %s\n", ZLIBNG_VERSION);
+#elif defined ZLIB_VERSION
 		strbuf_addf(buf, "zlib: %s\n", ZLIB_VERSION);
 #endif
 	}

t/t0091-bugreport.sh

@@ -47,7 +47,8 @@ test_expect_success 'sanity check "System Info" section' '
 	# This is bound to differ from environment to environment,
 	# so we just do some rather high-level checks.
 	grep "uname: ." system &&
-	grep "compiler info: ." system
+	grep "compiler info: ." system &&
+	grep "zlib." system
 '
 
 test_expect_success 'dies if file with same name as report already exists' '