Add a hostname override

Based on issue #82, we now provide `-B` to override the hostname. In
particular:

- `mkrc -B foo` will enable `-o` but with the hostname set up `foo`.
- `lsrc -B foo` will work like normal `lsrc` except it treats `host-foo`
as the host-specific directory.
- `rcup -B foo` will run a normal `rcup` except `host-foo` is the
host-specific directory.
- `rcdn -B foo` is just like normal `rcdn`, but with `host-foo` as the
  host-specific directory.

The `HOSTNAME` can also be set in the rcrc(5), and this is overridden by
the aforementioned `-B`.

While making this change: The `test/Makefile.am` used a mix of tabs and
spaces. Since it's a Makefile, replace it all with tabs.

1 files changed, 2 insertions, 0 deletions

diff --git a/NEWS.md.in b/NEWS.md.in
index 68e63be..e1b68c6 100644
--- a/NEWS.md.in
+++ b/NEWS.md.in
@@ -4,6 +4,8 @@ rcm (@PACKAGE_VERSION@) unstable; urgency=low
     directory. Verbose hidden files for lsrc(1) (Javier López).
   * Allow running mkrc on a relative file and preserve the
     path (Pablo Olmos de Aguilera Corradini).
+  * A flag (-B), and a variable for rcrc(5) (HOSTNAME), for changing the
+    hostname as rcm sees it (Mike Burns).
 
  -- Mike Burns <mburns@thoughtbot.com>  Fri, 28 Mar 2014 16:30:53 +0100