build: simplify code related to man pages

Simplify the main targets and use wildcards instead of repeating the
filenames manually.

Also, restore the `man` target and building only when `HAVE_MAN` is
enabled.

Note: Make automatically removes intermediate files (.1 and .5), so in
general only the .gz files have to be cleaned.

Commands used to rename the man pages:

    cd src/man
    git mv firecfg.txt firecfg.1.in
    git mv firejail-login.txt firejail-login.5.in
    git mv firejail-profile.txt firejail-profile.5.in
    git mv firejail-users.txt firejail-users.5.in
    git mv firejail.txt firejail.1.in
    git mv firemon.txt firemon.1.in
    git mv jailcheck.txt jailcheck.1.in

This is kind of a follow-up to commit 9e206b7f2 ("rework src/man
Makefile", 2023-07-07).

1 files changed, 3 insertions, 2 deletions

diff --git a/RELNOTES b/RELNOTES
index 0244d9741..dfa62a7c0 100644
--- a/RELNOTES
+++ b/RELNOTES
@@ -21,8 +21,6 @@ firejail (0.9.73) baseline; urgency=low
     #5618)
   * bugfix: fix --hostname and --hosts-file commands
   * bugfix: arp.c: ensure positive timeout on select(2) (#5806)
-  * build: fixed problem with seccomp filters and man pages built every
-     time when running make
   * build: auto-generate syntax files (#5627)
   * build: mark all phony targets as such (#5637)
   * build: mkdeb.sh: pass all arguments to ./configure (#5654)
@@ -32,6 +30,9 @@ firejail (0.9.73) baseline; urgency=low
   * build: remove -mretpoline and NO_EXTRA_CFLAGS (#5859)
   * build: disable all built-in implicit make rules (#5864)
   * build: organize and standardize make vars and targets (#5866)
+  * build: fix seccomp filters and man pages always being rebuilt when running
+    make
+  * build: simplify code related to man pages (#5898)
   * ci: always update the package db before installing packages (#5742)
   * ci: fix codeql unable to download its own bundle (#5783)
   * ci: split configure/build/install commands on gitlab (#5784)