doc: Add a manpage for the aelparse utility

This patch adds a manpage for the aelparse utility. Note that this is one of
the patches the Debian distro applies for the Asterisk project, as per
ASTERISK-24191.

Review: https://reviewboard.asterisk.org/r/3896/

ASTERISK-24171 #close
Reported by: Jeremy Laine
patches:
  aelparse.8 uploaded by Jeremy Laine (License 6561)
........

Merged revisions 422371 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@422372 65c4cc65-6c06-0410-ace0-fbb531ad65f3

doc/aelparse.8

+.TH AELPARSE "8" "Jul 2014" "Asterisk trunk" ""
+.SH NAME
+aelparse \- utility to check extensions.ael for errors
+.SH SYNOPSIS
+.B aelparse
+[\-d] [\-n] [\-q] [\-w]
+.SH DESCRIPTION
+aelparse is a utility to check the extensions.ael configuration file before
+feeding it to asterisk.
+.SH OPTIONS
+.TP
+\fB\-d\fR
+Use the current working directory as the CONFIG_DIR.
+.TP
+\fB\-n\fR
+Do not display the instructions generated by the compiler.
+.TP
+\fB\-q\fR
+Suppress progress and non-error messages.
+.TP
+\fB\-w\fR
+Dump extensions.conf format to extensions.conf.aeldump.
+
+.SH SEE ALSO
+.B asterisk(8)
+
+.SH AUTHOR
+This manual page was written by Jeremy Lainé <jeremy.laine@m4x.org>.