Extract of changes below.
*** Changes in GDB 5.3:
* GNU/Linux shared library multi-threaded performance improved.
* ``gdbserver'' now supports multi-threaded applications on some targets
* GDB now supports C/C++ preprocessor macros.
* Multi-arched targets.
DEC Alpha (partial) alpha*-*-*
DEC VAX (partial) vax-*-*
NEC V850 v850-*-*
National Semiconductor NS32000 (partial) ns32k-*-*
Motorola 68000 (partial) m68k-*-*
Motorola MCORE mcore-*-*
* New targets.
Fujitsu FRV architecture added by Red Hat frv*-*-*
* New native configurations
Alpha NetBSD alpha*-*-netbsd*
SH NetBSD sh*-*-netbsdelf*
MIPS NetBSD mips*-*-netbsd*
UltraSPARC NetBSD sparc64-*-netbsd*
* OBSOLETE configurations and files
Mitsubishi D30V d30v-*-*
OS/9000 i[34]86-*-os9k
IBM AIX PS/2 i[3456]86-*-aix
Fujitsu FR30 fr30-*-elf*
Motorola Delta 88000 running Sys V m88k-motorola-sysv or delta88
Argonaut Risc Chip (ARC) arc-*-*
i386 running Mach 3.0 i[3456]86-*-mach3*
i386 running Mach i[3456]86-*-mach*
i386 running OSF/1 i[3456]86-*osf1mk*
HP/Apollo 68k Family m68*-apollo*-sysv*,
m68*-apollo*-bsd*,
m68*-hp-bsd*, m68*-hp-hpux*
I960 with MON960 i960-*-coff
* OBSOLETE languages
CHILL, a Pascal like language used by telecommunications companies.
* REMOVED configurations and files
AMD 29k family via UDI a29k-amd-udi, udi29k
A29K VxWorks a29k-*-vxworks
AMD 29000 embedded, using EBMON a29k-none-none
AMD 29000 embedded with COFF a29k-none-coff
AMD 29000 embedded with a.out a29k-none-aout
testsuite/gdb.hp/gdb.threads-hp/ directory
* New command "set max-user-call-depth <nnn>"
* Changes in FreeBSD/i386 native debugging.
Support for the "generate-core-file" has been added.
* New commands "dump", "append", and "restore".
* Improved "next/step" support on multi-processor Alpha Tru64.
