Configure and compile errors in 2.4.5ac20 and 2.4.5ac21

[Ignacio Monge <ignaciomonge@navegalia.com>]

Output ver_linux:

Gnu C                  2.96
Gnu make               3.79.1
binutils               2.11.90.0.8
util-linux             2.11e
mount                  2.11e
modutils               2.4.6
e2fsprogs              1.21
reiserfsprogs          3.x.0j
PPP                    2.4.1
Linux C Library        2.2.3
Dynamic linker (ldd)   2.2.3
Procps                 2.0.7
Net-tools              1.60
Console-tools          0.2.3
Sh-utils               2.0.11
Modules Loaded         ppp_async ppp_generic slhc es1371 ac97_codec
soundcore nfsd lockd sunrpc 8139too iptable_nat ip_conntrack ip_tables
reiserfs


ERRORS:
	1.- Entering in "Network Device support"-->Ethernet (10 or 100Mbit) 
--->causes an error:
	 Q> scripts/Menuconfig: MCmenu31: command not found

	2.- PnP Bios compile errors:

gcc -D__KERNEL__ -I/usr/src/linux/include -Wall -Wstrict-prototypes
-Wno-trigraphs -O2 -fomit-frame-pointer -fno-strict-aliasing -fno-common
-pipe -mpreferred-stack-boundary=2 -march=athlon     -DEXPORT_SYMTAB -c
pnp_bios.c
pnp_bios.c: In function `pnp_dock_event':
pnp_bios.c:442: `hotplug_path' undeclared (first use in this function)
pnp_bios.c:442: (Each undeclared identifier is reported only once
pnp_bios.c:442: for each function it appears in.)
pnp_bios.c: In function `pnp_dock_thread':
pnp_bios.c:496: warning: `d' might be used uninitialized in this function
pnp_bios.c: At top level:
pnp_bios.c:597: warning: `pnp_bios_exit' defined but not used
{standard input}: Assembler messages:
{standard input}:64: Warning: indirect lcall without `*'
{standard input}:135: Warning: indirect lcall without `*'
{standard input}:188: Warning: indirect lcall without `*'
{standard input}:229: Warning: indirect lcall without `*'
make[3]: *** [pnp_bios.o] Error 1
make[3]: Saliendo directorio `/usr/src/linux/drivers/pnp'
make[2]: *** [first_rule] Error 2
make[2]: Saliendo directorio `/usr/src/linux/drivers/pnp'
make[1]: *** [_subdir_pnp] Error 2
make[1]: Saliendo directorio `/usr/src/linux/drivers'
make: *** [_dir_drivers] Error 2