gnucash maint: Improve the test-templates README and update the templates to current practice.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/2663dc96 (commit)
	from  https://github.com/Gnucash/gnucash/commit/124a2479 (commit)



commit 2663dc96e247ac0dfbc32a4d78669c168293b93d
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue Jul 28 11:45:22 2015 -0700

    Improve the test-templates README and update the templates to current practice.



Summary of changes:
 test-templates/README        | 29 +++++++++++-----
 test-templates/test-module.c |  5 +--
 test-templates/test-suite.c  | 45 ++++++++++++++----------
 test-templates/testmain.c    | 82 ++++++++++++++++++++++++++++++++++++--------
 4 files changed, 116 insertions(+), 45 deletions(-)