tzcode: Update to 2023d

two hunks had conflicts:
* just use cc instead of gcc, it should be the same
* HAVE_ADJTIME isn't used anymore anyway, so we can just remove it

tzcode/tzcode-makefile.patch

@@ -18,15 +18,6 @@
  
  # Manual pages go in subdirectories of. . .
  MANDIR = $(TOPDIR)/$(USRSHAREDIR)/man
-@@ -370,7 +370,7 @@
- # January's first Monday when a "%V" format is used and January 1
- # falls on a Friday, Saturday, or Sunday.
- 
--CFLAGS=
-+CFLAGS+= -DHAVE_ADJTIME=0
- 
- # Linker flags.  Default to $(LFLAGS) for backwards compatibility
- # to release 2012h and earlier.
 @@ -403,7 +403,7 @@
  # Also, it is better (though not essential) if 'awk' supports UTF-8,
  # and unfortunately mawk and busybox awk do not support UTF-8.
@@ -36,12 +27,3 @@
  
  # The full path name of a Posix-compliant shell, preferably one that supports
  # the Korn shell's 'select' statement as an extension.
-@@ -482,7 +482,7 @@
- 
- #MAKE=		make
- 
--cc=		cc
-+cc=		gcc
- CC=		$(cc) -DTZDIR='"$(TZDIR)"'
- 
- AR=		ar