[Xen-devel] [PATCH 0/9 v2] xl: convert exit codes related to domain subcommands to EXIT_[SUCCESS|FAILURE]

[Harmandeep Kaur <write.harmandeep@xxxxxxxxx>]

*main_foo() is treated somewhat as a regular main(), it is changed to
return EXIT_SUCCESS or EXIT_FAILURE.

*Functions that are not main_foo(), are changed to do 'return 0' or
'return 1', and then 0/1 is taken care in the main_foo() functions
that calls them.

*Functions in xl_cmdimpl.c related to domain subcommands are fixed.

*Aim of this patch is to make exit codes consistent so that anything useful can 
be done with these exit codes.

*This series is a follow-up for the following series:
http://lists.xenproject.org/archives/html/xen-devel/2015-10/msg02990.html

*Some discussions about this patch:
http://lists.xen.org/archives/html/xen-devel/2015-10/msg02497.html
http://lists.xen.org/archives/html/xen-devel/2015-10/msg02501.html
http://lists.xen.org/archives/html/xen-devel/2015-10/msg02509.html

*v1 of this patch:
http://lists.xenproject.org/archives/html/xen-devel/2016-02/msg03353.html
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