MDEV-27965: MariaDB needs at least libfmt version 7.0

Add requirement in Debian control file for libfmt 7.0
which is needed for building MariaDB.

This supports the SFORMAT function added in MDEV-25015.

+ autobake-deb.sh so old Debian/Ubuntu still
bundle the libfmt pulled in from upstream.

Closes #2062

debian/autobake-deb.sh

@@ -65,6 +65,12 @@ disable_pmem()
   sed '/-DWITH_PMEM=yes/d' -i debian/rules
 }
 
+disable_libfmt()
+{
+  # 0.7+ required
+  sed '/libfmt-dev/d' -i debian/control
+}
+
 architecture=$(dpkg-architecture -q DEB_BUILD_ARCH)
 
 CODENAME="$(lsb_release -sc)"
@@ -77,6 +83,7 @@ case "${CODENAME}" in
     disable_pmem
     ;&
   buster)
+    disable_libfmt
     replace_uring_with_aio
     if [ ! "$architecture" = amd64 ]
     then
@@ -106,6 +113,7 @@ case "${CODENAME}" in
     ;&
   focal)
     replace_uring_with_aio
+    disable_libfmt
     ;&
   impish|jammy)
     # mariadb-plugin-rocksdb s390x not supported by us (yet)

debian/control

@@ -23,6 +23,7 @@ Build-Depends: bison,
                libcurl4-openssl-dev | libcurl4-dev,
                libedit-dev,
                libedit-dev:native,
+               libfmt-dev (>= 7.0.0),
                libjemalloc-dev [linux-any],
                libjudy-dev,
                libkrb5-dev,