or EXTLINUX apply to that specific program only; other changes apply
to all derivatives.
+Changes in 5.11:
+ * Dynamic debug support: Add new module, debug.c32, that allows
+ debug code to be dynamically enabled and disabled at runtime.
+
+Changes in 5.10:
+ * PXELINUX: An entirely new network implementation based on
+ the lwIP embedded TCP/IP stack. As a result, plain PXELINUX
+ can now support HTTP and FTP without gPXE/iPXE. ls/readdir
+ functionality is supported over HTTP with an indexing
+ webserver, or over FTP with most common FTP servers. For the
+ new network stack use lpxelinux.0. For the legacy stack use
+ pxelinux.0.
+ * Rename the "ipappend" option to "sysappend" ("ipappend" is
+ still accepted as an alias) and make it available for all
+ derivatives. Add additional strings derived from the system
+ DMI/SMBIOS information if available.
+ * "sysappend" strings are also sent as http cookies, with the
+ prefix _Syslinux_ added, on all http transfers. This can be
+ overridden with the SENDCOOKIES configuration file command.
+ * poweroff.c32: A new module to power off a system via APM. It
+ replaces the poweroff COMBOOT module (Sebastian Herbszt).
+ * PXELINUX: Fix booting with DHCP options 209 and 210 which was
+ broken in 5.00.
+ * Handle loading kernel images with no protected mode code. A
+ legitimate kernel image can consist solely of real-mode code.
+ The support for booting such images was broken in 5.00 (Josh Triplett).
+ * Fix a regression in the .psf font file loader introduced
+ in 5.00.
+
+Changes in 5.01:
+ * txt/: A new AsciiDoc documentation set (work-in-progress)
+ (Gene Cumm).
+ * core: Fix a bug in the realloc() implementation that caused
+ machines to appear to run out of free memory.
+ * ldlinux: Fix multiple buffer overflows in cmdline parsing
+ code that resulted in files failing to run and cmdlines
+ being truncated.
+ * core: Fix debug build by tagging __bad_SEG() with __export.
+ * com32: Restrict library filenames to 8.3 format.
+ * EXTLINUX: Fix installation and subdirectory patching.
+ * ISOLINUX: Fix booting isohybrid images that are over 32K.
+ * com32: Strip modules to reduce their size.
+ * XFS: Implement directory block cache and fix
+ shortform-directory lookup (Paulo Alcantara).
+
+Changes in 5.00:
+ * com32: Switched from the COM32 object format to ELF as it is
+ a much more powerful format that allows undefined symbols to
+ be resolved at runtime and dynamic loading of module
+ dependencies, which means modules now become shared object
+ files instead of statically linked binaries - reducing both
+ disk space and runtime memory consumption.
+ * core: Split non-core functionality into ldlinux.c32, which
+ is an ELF module loaded by the core that contains everything
+ the core doesn't require to boot the system, e.g. config
+ parser, command-line interface, etc.
+ * Replaced __intcall() calls with direct function calls now
+ that we can resolve undefined symbols at runtime, thanks to
+ the ELF object support. Now that we no longer need to go
+ through the 16-bit interrupt mechanism we can make full use
+ of the 32-bit execution environment. This change required
+ reimplementing lots of the 16-bit assembly code from core/
+ in C.
+ * com32: __com32.cs_bounce is gone now we always run in a
+ 32-bit environment once we execute ldlinux.c32.
+ * ldlinux: A new "PATH" directive was added to the ldlinux.c32
+ config parser that specifies a colon-separated list of
+ directories to search when attempting to load modules.
+ * ALL: Delete all references to/code for 16-bit COMBOOT files.
+ COMBOOT files (.cbt and .com) are no longer supported under
+ Syslinux.
+
+ Changes in 4.07:
+ * EXTLINUX: fix crash caused by dereferencing garbage pointer.
+ * Plug memory leak in searchdir which eventually leads to an
+ observable hang (Shao Miller).
+ * ISOLINUX: fix bug triggered by isohybrid images larger than
+ 32K which results in an invalid image checksum error.
+ * menugen: make it Py3k compatible (Paulo Alcantara).
+
Changes in 4.06:
* Support for NTFS, by Paulo Alcantara.
* EXTLINUX: more robust device detection, allow user to override.