[pango] build: Update MSVC build docs for introspection

[Chun-wei Fan <fanchunwei src gnome org>]

commit 1377d3cf8219cf41e3bacd2eaa848a92009eaa1f
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Fri Aug 25 18:22:23 2017 +0800

    build: Update MSVC build docs for introspection
    
    Let people know about the situation where one is able to build the
    introspection files directly from within the Visual Studio projects.

 win32/vs10/README.txt |   16 ++++++++++++++++
 win32/vs9/README.txt  |   16 ++++++++++++++++
 2 files changed, 32 insertions(+), 0 deletions(-)
---
diff --git a/win32/vs10/README.txt b/win32/vs10/README.txt
index 2f1be96..81fffa3 100644
--- a/win32/vs10/README.txt
+++ b/win32/vs10/README.txt
@@ -92,5 +92,21 @@ keep separate the concept of a "source tree", where also non-public
 headers are present, and an "install tree" where only public headers
 are present.
 
+There is now a "pango-introspect" project that is used to build the
+introspection files.  In order for this to work, check that the paths for
+PythonDir (32-bit builds) and PythonDirX64 (x64 builds) are correct for your
+system.  Note that it must be the same Python installation that was used to
+build GObject-Introspection (G-I), and a complete G-I build/installation
+needs to be found in <root>\vs10\<PlatformName>\.  Note also that this is not
+built by default, so you will need to right-click on the project to build it,
+which will build and "install" the other projects that are normally built, if
+those were not yet built.  The introspection files that are built will be
+"installed" to <root>\vs10\<PlatformName>\share\gir-1.0 (the .gir file(s)) and
+<root>\vs10\<PlatformName>\lib\girepository-1.0 (the .typelib files(s)) upon
+successful build.  for building this in a different configuration, therefore,
+you will need to clean this project specifically and then rebuild.  Note that
+this is currently supported only for the non _FC (i.e. where PangoFT2 is not
+built) configurations
+
 --Tor Lillqvist <tml iki fi>
 --Updated by Fan, Chun-wei <fanc999 yahoo com tw>
diff --git a/win32/vs9/README.txt b/win32/vs9/README.txt
index f4bdfbf..18f958d 100644
--- a/win32/vs9/README.txt
+++ b/win32/vs9/README.txt
@@ -92,5 +92,21 @@ keep separate the concept of a "source tree", where also non-public
 headers are present, and an "install tree" where only public headers
 are present.
 
+There is now a "pango-introspect" project that is used to build the
+introspection files.  In order for this to work, check that the paths for
+PythonDir (32-bit builds) and PythonDirX64 (x64 builds) are correct for your
+system.  Note that it must be the same Python installation that was used to
+build GObject-Introspection (G-I), and a complete G-I build/installation
+needs to be found in <root>\vs9\<PlatformName>\.  Note also that this is not
+built by default, so you will need to right-click on the project to build it,
+which will build and "install" the other projects that are normally built, if
+those were not yet built.  The introspection files that are built will be
+"installed" to <root>\vs9\<PlatformName>\share\gir-1.0 (the .gir file(s)) and
+<root>\vs9\<PlatformName>\lib\girepository-1.0 (the .typelib files(s)) upon
+successful build.  for building this in a different configuration, therefore,
+you will need to clean this project specifically and then rebuild.  Note that
+this is currently supported only for the non _FC (i.e. where PangoFT2 is not
+built) configurations
+
 --Tor Lillqvist <tml iki fi>
 --Updated by Fan, Chun-wei <fanc999 yahoo com tw>