mkmodpack: include leading directories for firmware files

Add support 'fuid' automatic mode option for method cdrom
Fix potential memory overflow in welcome string
Set PREFIX to "/" for nfs and cifs methods due its mounted to image root

cdrom.c: Try to mount multiple devices in automatic mode

disk.c, mount.c: Add support exfat

mkmodpack: warn about incorrect patterns

fix hangs until http socket not closed on server side (closes: #37150)
tools.c: break reading cycle if we actually loaded program into memory
url.c, network.c: disable keep-alive and close http socket after downloading

compile with _FILE_OFFSET_BITS=64

probing.c: added support for SD-cards when boot in LiveCD-mode

add support cifs install method
replace HTTP request version from 1.0 to 1.1
increase DHCP tries and timeouts for DISCOVER request

dhcp.c: Remove temporary default route properly (altbug:#34347).
dhcp.c: Provide DHCP vendor class identifier in requests (altbug:#34320).

New udev control logic imported from make-initrd scripts.
Udev-trigger replaced to udev-settle() in hardware wait loops.
All udev control code moved from init.c to new udev.c module.
Lazy initialization mode support added for work in cooperate
initrd: this is experimental future, turned off by
initrd-propagator.
disk.c, cdrom.c: 15 attempts with udev-settle() calls.
network.c: bridge up algorithm reviewed, fixed memory leaks.
network.c: 15 attempts to select and wait network interface;
probing.c, probing.h, dhcp.c: small fixes, now black list used.
modules_descr.h, stage1.c: deprecated header, unused code removed.
dhcp.c: fix potentially destructive typo (closes: #34322),
Workaround race conditions during disks detection (closes: #30315).
Workaround race conditions during bridging up network interfaces,
April/date.html
Multiple small code improvements, fixes for avoid memory leaks

probing.c: added support for MMC devices when boot in LiveCD-mode
cdrom.c: fixed implicit declaration of function opendir warning
disk.c: Workaround race conditions during disks detection
cdrom.c, network.c, tools.c: Fix memory leaks.
tools.c: Don't do useless comparisons during cmdline processing.
Use ramdisk_size from kernel cmdline.
Check that RAM size is enough for ramdisk.

Fixed errors found by cppcheck.

probing.c: bump max disk number from 50 to 250 (closes: #32934)

disk.c: retry uuid/label based autodetection upon a pause