Add version check to get_source.sh

[Mike Duigou]

On Jun 23 2014, at 21:38 , Mikael Vidstedt <mikael.vidstedt at oracle.com> wrote:

> 
> Minor typo:
> 
> + echo "WARNING: Mercurial version $rqstmajor.$rqstminor.$rqstrev or later is recommended. $hgwhere is version version $hgversion" >&2
> "...version version..."
> Otherwise fine!

Thank you. Corrected.

> 
> Cheers,
> Mikael
> 
> On Jun 23, 2014, at 14:50, Mike Duigou <mike.duigou at oracle.com> wrote:
> 
>> Hello all;
>> 
>> This is the changeset for the enhancement proposed last week. It adds version checks to get_source.sh script. Currently the script will abort if the Mercurial client is not found or is older than 1.5.0. If Mercurial client is older than 2.6.3 then a warning will be issued but the script will attempt to continue.
>> 
>> webrev: http://cr.openjdk.java.net/~mduigou/JDK-8047925/0/webrev/
>> jbsbug: https://bugs.openjdk.java.net/browse/JDK-8047925
>> 
>> Mike