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, 16 deletions

diff --git a/.gitignore b/.gitignore
index 549f12738..2285c3e5d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,9 +6,9 @@
 *.rpm
 *.gcda
 *.gcno
+*.gz
 *.DS_Store
 .directory
-*.man
 .vscode
 /firejail-*/
 autom4te.cache/
@@ -20,14 +20,6 @@ contrib/syntax/files/example
 contrib/syntax/files/firejail-profile.lang
 contrib/syntax/files/firejail.vim
 firejail-*.tar.xz
-firejail-login.5
-firejail-profile.5
-firejail-config.5
-firejail-users.5
-firejail.1
-firemon.1
-firecfg.1
-jailcheck.1
 src/fnettrace-dns/fnettrace-dns
 src/fnettrace-sni/fnettrace-sni
 src/fnettrace-icmp/fnettrace-icmp
@@ -68,10 +60,5 @@ __pycache__
 *.pyc
 *.pyo
 src/fnettrace/static-ip-map
-src/man/firecfg.1.gz
-src/man/firejail-login.5.gz
-src/man/firejail-profile.5.gz
-src/man/firejail-users.5.gz
-src/man/firejail.1.gz
-src/man/firemon.1.gz
-src/man/jailcheck.1.gz
+src/man/*.1
+src/man/*.5