Add version check to get_source.sh

[pointo1d]

Hiya Mike ,

On 23/06/14 22:50, Mike Duigou 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

Would the following (or similar) not help by way of improving 
readability (also incorporating the typo identified by Mikael)...

to_stderr() {
     echo "$@" >&2
}

error() {
     to_stderr "ERROR: $1"
     exit ${2:-126}
}

error "Could not locate Mercurial command"
.
.
.
error"Could not determine Mercurial version"
.
.
.
to_stderr "WARNING: Mercurial version $rqstmajor.$rqstminor.$rqstrev or later is recommended. $hgwhere is version $hgversion"


Best rgds ,
--
Dave Pointon FIAP MBCS
Now I saw, tho' too late, the folly of beginning a work before we count the
cost and before we we judge rightly of our strength to go thro' with it
- Robinson Crusoe