doc: update links in HACKING and remove obsolete statements

Signed-off-by: Yury V. Zaytsev <yury@shurup.com>

Author: zyv

doc/HACKING

@@ -26,10 +26,6 @@ and `make' as usually.
 The distribution tarball is created by the command `make distcheck'. 
 This command can take a while.
 
-Currently snapshots are made on Debian unstable and use the versions of
-the tools from the unstable repository.  Yes, the rpm packages are made
-on Debian too.
-
 Note that the version of gettext doesn't affect the snapshot because the
 distributed files are installed by gettext from archives for the version
 used in the AM_GNU_GETTEXT_VERSION macro, which is 0.18.2.
@@ -265,31 +261,34 @@ Where to Find Bug Reports and Patches
 
 The official place for bug reports is:
 
-    https://www.midnight-commander.org/
+    https://www.midnight-commander.org
 
 
 There are various unofficial sources where bug reports and patches can
 be found (NOT maintained by the MC team).
 
 
-http://bugs.debian.org/mc
+https://tracker.debian.org/pkg/mc
+https://bugs.debian.org/cgi-bin/pkgreport.cgi?pkg=mc
 	The bug tracking system for Debian, a package collection mainly
 	for GNU/Linux and the Hurd.
 
-http://bugzilla.redhat.com/bugzilla/buglist.cgi?component=mc
+https://bugzilla.redhat.com/bugzilla/buglist.cgi?component=mc
+https://src.fedoraproject.org/rpms/mc
 	Bugs reported in Redhat Linux.
 
-http://www.openbsd.org/cgi-bin/cvsweb/ports/misc/mc/patches/
-	The patches that are applied for the OpenBSD version of MC.
+https://gitweb.gentoo.org/repo/gentoo.git/tree/app-misc/mc/files
+	The patches that are applied for the Gentoo Linux version of MC.
 
-http://www.freebsd.org/cgi/cvsweb.cgi/ports/misc/mc/files/
+https://cgit.freebsd.org/ports/tree/misc/mc/files
 	The patches that are applied for the FreeBSD version of MC.
 
+https://cvsweb.openbsd.org/ports/misc/mc/patches/
+	The patches that are applied for the OpenBSD version of MC.
+
 http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/sysutils/mc/patches/
 	The patches that are applied for the NetBSD version of MC.
 
-http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/app-misc/mc/files/?hideattic=1
-	The patches that are applied for the Gentoo Linux version of MC.
 
 
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