keithw/mosh — pull request #266 by andersk (2012-05-05 20:43:05+00:00)
Title: Only use AM_PROG_AR if it’s defined

Fixes
```
aclocal:configure.ac:22: warning: macro `AM_PROG_AR' not found in library
```
and
```
./configure: line 4024: AM_PROG_AR: command not found
```
with old automake.

(Someone should probably test this with automake 1.12 first.)