[librsvg/librsvg-2.48] win32/README.txt: Mention about test dependencies

[Federico Mena Quintero <federico src gnome org>]

commit 679f183e0503f705c324b5222862a05753babd62
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Mar 25 15:43:23 2020 +0800

    win32/README.txt: Mention about test dependencies
    
    The test programs now make use of APIs from HarfBuzz and FreeType, so let
    people know that they need to have the HarfBuzz and FreeType headers, .lib's
    and DLLs (if applicable) in order to build and run the test programs, even if
    they are building without enabling PangoFT2 support in the test programs

 win32/README.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/win32/README.txt b/win32/README.txt
index a7e31a83..e5b15bfc 100644
--- a/win32/README.txt
+++ b/win32/README.txt
@@ -62,7 +62,9 @@ for all targets.
                   If `INTROSPECTION=1` is specified, this will also build
                   the introspection files (.gir/.typelib) for librsvg.
 -all: see (not specified).
--tests: Same as (not specified) but also builds the test programs in $(srcroot)\tests
+-tests: Same as (not specified) but also builds the test programs in $(srcroot)\tests.
+        You will need the FreeType and HarfBuzz headers, libraries and DLLs (if applicable)
+        to build and run this successfully, even if you are building without PangoFT2.
 -rsvg_rust_tests: Makes a build of the rust items into an executable to test the rust
                   bits.  You may need to make a copy of libxml2.lib (or so) to xml2.lib
                   in order to build this successfully.