Update bundled libs to current versions

- update README.bundled-libs.txt + some comments
- update bundled jpeg lib from version 9c to 9d

All bundled libs are now up-to-date. For current update status
please see README.bundled-libs.txt.

1 files changed, 25 insertions, 28 deletions

diff --git a/README.bundled-libs.txt b/README.bundled-libs.txt
index 92bfb0b3c..40d8681b2 100644
--- a/README.bundled-libs.txt
+++ b/README.bundled-libs.txt
@@ -1,44 +1,41 @@
 README.bundled-libs.txt - Developer information for bundled libraries
 ---------------------------------------------------------------------
 
-******************************************************
-*** NOTICE *** This file is still work in progress ***
-******************************************************
-
 This file is mainly intended for FLTK developers and contains information
 about the current versions of all bundled libraries and about how to
 upgrade these bundled libraries.
 
 
-Current versions of bundled libraries:
-
-  ** work in progress -- not yet completely upgraded **
+Current versions of bundled libraries (as of Feb 25, 2021):
 
   Library       Version            Release date         FLTK Version
   --------------------------------------------------------------------------
-  jpeg          jpeg-9c            2018-01-14           1.4.0
+  jpeg          jpeg-9d            2020-01-12           1.4.0
   nanosvg       a1eea27b3d [1]     2021-02-21           1.4.0
   png           libpng-1.6.37      2019-04-14           1.4.0
   zlib          zlib-1.2.11        2017-01-15           1.4.0
+  --------------------------------------------------------------------------
 
 Previous versions of bundled libraries:
 
   Library       Version            Release date         FLTK Version
   ------------------------------------------------------------------
-  nanosvg       f31098fa85 [1]     2019-05-23           1.4.x
-  jpeg          jpeg-9a            2014-01-19           1.3.5
-  png           libpng-1.6.16      2014-12-22           1.3.5
-  zlib          zlib-1.2.8         2013-04-28           1.3.5
+  jpeg          jpeg-9d            2020-01-12           1.3.6
+  png           libpng-1.6.37      2019-04-14           1.3.6
+  zlib          zlib-1.2.11        2017-01-15           1.3.6
+  --------------------------------------------------------------------------
+
 
 [1] Git commit in: https://github.com/fltk/nanosvg
     See also git tag 'fltk_yyyy-mm-dd' where yyyy-mm-dd == "Release date"
     and file nanosvg/README.txt.
 
+
 General information:
 
-  FLTK does not include the entire library distributions. We only provide
-  the source files necessary to build the library itself. There are no
-  test programs or other contributed files.
+  FLTK does not include the entire library distributions. We only provide the
+  source files necessary to build the FLTK library and some README and/or
+  CHANGELOG files. There are no test programs or other contributed files.
 
   We use our own build files, hence a few files MUST NOT be upgraded when
   the library source files are upgraded. We strive to keep changes to the
@@ -46,11 +43,11 @@ General information:
   work with FLTK should be a rare exception.
 
   If patches are necessary all changes in the library files should be
-  marked with "FLTK" in a comment so a developer that upgrades the library
+  marked with "FLTK" in a comment so a developer who upgrades the library
   later is aware of changes in the source code for FLTK. Additional comments
   should be added to show the rationale, i.e. why a particular change was
-  necessary. If applicable, add a reference to a Software Trouble Report
-  like "STR 3456", "Issue #123", or "PR #234".
+  necessary. If applicable, add a reference to a Software Trouble Report,
+  GitHub Issue or PR like "STR 3456", "Issue #123", or "PR #234".
 
 
 How to update the bundled libraries:
@@ -62,8 +59,8 @@ How to update the bundled libraries:
 
   Some config header files may be pre-generated in the FLTK sources. These
   header files should be left untouched, but it may be necessary to update
-  them if new items were added to the new library version. In this case
-  the new header should be pre-generated on a Linux system with default
+  these files if new items were added to the new library version. In this
+  case the new header should be pre-generated on a Linux system with default
   options unless otherwise mentioned below for a specific library.
   Currently there are no known exceptions.
 
@@ -113,7 +110,7 @@ Upgrade notes for specific libraries:
 
 zlib:
 
-  Website:    http://zlib.net/
+  Website:    https://zlib.net/
   Download:   See website and follow links.
   Repository: git clone https://github.com/madler/zlib.git
 
@@ -159,7 +156,7 @@ png:
 
 jpeg:
 
-  Website:    http://ijg.org/
+  Website:    https://ijg.org/
   Download:   See website and follow links.
   Repository: <unknown>
 
@@ -182,11 +179,11 @@ nanosvg:
   Website:    https://github.com/memononen/nanosvg
   Download:   See website and follow links.
   Repository: git clone https://github.com/memononen/nanosvg.git
-  FLTK Clone: git clone https://github.com/fltk/nanosvg.git
+  FLTK Fork:  git clone https://github.com/fltk/nanosvg.git
 
-  FLTK has its own GitHub clone of the original repository (see above).
+  FLTK has its own GitHub fork of the original repository (see above).
 
-  The intention is to update this clone from time to time so the FLTK
+  The intention is to update this fork from time to time so the FLTK
   specific patches are up-to-date with the original library. Hopefully
   the FLTK patches will be accepted upstream at some time in the future
   so we no longer need our own patches.
@@ -195,7 +192,7 @@ nanosvg:
   Update (Feb 22, 2021): The upstream library is officially no longer
   maintained (see README.md) although updates appear from time to time.
 
-  Use this clone (branch 'fltk') to get the nanosvg library with FLTK
+  Use this fork (branch 'fltk') to get the nanosvg library with FLTK
   specific patches:
 
     $ git clone https://github.com/fltk/nanosvg.git nanosvg-fltk
@@ -209,5 +206,5 @@ nanosvg:
 
   The following files need special handling:
 
-    nanosvg.h:     Merge or download from FLTK's clone (see above).
-    nanosvgrast.h: Merge or download from FLTK's clone (see above).
+    nanosvg.h:     Merge or download from FLTK's fork (see above).
+    nanosvgrast.h: Merge or download from FLTK's fork (see above).