[doc] add libdeflate to INSTALL
@@ -71,6 +71,8 @@ optional packages for optional features ::
libdbi-dbd-mysql
libdbi-dbd-pgsql
libdbi-dbd-sqlite
+ libdeflate # libdeflate ./configure --with-libdeflate
+ libdeflate-devel
libmaxminddb # MaxMindDB ./configure --with-maxminddb
libmaxminddb-devel
libpq # Postgresql ./configure --with-pgsql
