Bump version to 15.8

What's changed
* Various CVE fixes:
  CVE-2023-40546 mok: fix LogError() invocation
  CVE-2023-40547 - avoid incorrectly trusting HTTP headers
  CVE-2023-40548 Fix integer overflow on SBAT section size on 32-bit system
  CVE-2023-40549 Authenticode: verify that the signature header is in bounds.
  CVE-2023-40550 pe: Fix an out-of-bound read in verify_buffer_sbat()
  CVE-2023-40551: pe-relocate: Fix bounds check for MZ binaries
* Add make infrastructure to set the NX_COMPAT flag by @vathpela in #530
* Make sbat_var.S parse right with buggy gcc/binutils by @vathpela in #535
* Drop invalid calls to CRYPTO_set_mem_functions by @nicholasbishop in #537
* pe: Align section size up to page size for mem attrs by @nicholasbishop in #539
* test-sbat: Fix exit code by @vathpela in #540
* pe: Add IS_PAGE_ALIGNED macro by @nicholasbishop in #541
* CryptoPkg/BaseCryptLib: Fix buffer overflow issue in realloc wrapper by @nicholasbishop in #546
* Don't loop forever in load_certs() with buggy firmware by @rmetrich in #547
* Block Debian grub binaries with SBAT < 4 by @steve-mcintyre in #550
* Shim unable to locate grubx64 in PXE boot mode when grubx64 is stored in a different file path by @Alberto-Perez-Guevara in #551
* Further improve load_certs() for non-compliant drivers/firmwares by @pbatard in #560
* pe: only process RelocDir->Size of reloc section by @mikebeaton in #562
* Rename 'msecs' to 'usecs' to avoid potential confusion by @aronowski in #563
* Optionally allow to keep shim protocol installed by @bluca in #565
* SBAT-related documents formatting and spelling by @aronowski in #566
* Add SbatLevel_Variable.txt to document the various revocations by @jsetje in #569
* Add a security contact email address in README.md by @vathpela in #572
* Use -Wno-unused-but-set-variable for Cryptlib and OpenSSL by @vathpela in #576
* mok: fix LogError() invocation by @vathpela in #577
* Minor housekeeping by @vathpela in #578
* Test ImageAddress() by @vathpela in #579
* FreePages() is used to return memory allocated by AllocatePages() by @dennis-tseng99 in #580
* Size should minus 1 when calculating 'RelocBaseEnd' by @jsetje in #581
* Verify signature before verifying sbat levels by @jsetje in #583
* Add libFuzzer support for csv.c and sbat.c by @vathpela in #584
* mok: Avoid underflow in maximum variable size calculation by @alpernebbi in #587
* Housekeeping by @vathpela in #605

Signed-off-by: Peter Jones <pjones@redhat.com>

Makefile

@@ -1,7 +1,7 @@
 default : all
 
 NAME		= shim
-VERSION		= 15.7
+VERSION		= 15.8
 ifneq ($(origin RELEASE),undefined)
 DASHRELEASE	?= -$(RELEASE)
 else