gnucash maint: Multiple changes pushed

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/12d6ace9 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/c045e7c5 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/eab4eeca (commit)
	 via  https://github.com/Gnucash/gnucash/commit/058ef288 (commit)
	from  https://github.com/Gnucash/gnucash/commit/e3160af4 (commit)



commit 12d6ace967647ecc6f13d637e6d312ab737beefc
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Tue Feb 12 18:01:37 2019 +0800

    [commodity-utilities] first/second/third -> car/cadr/caddr

commit c045e7c5ecb10ab051332693ab6bb9ef5901a452
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Wed Jan 9 08:55:47 2019 +0800

    [commodity-utilities] simplify gnc:uniform-commodity?
    
    old code was confusing; returns non-#f if either of following is true:
    - elts is null list
    - elts is 1-element list
      and report-commodity is a member of this 1-element list
    
    change to much more intelligible code

commit eab4eecac85836abff26b4d699f9fd6af1bc8f9b
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Wed Jan 9 08:48:06 2019 +0800

    [commodity-utilities] deprecate gnc-commodity-collector-commodity-count
    
    this function is only used twice in exported functions. inline and
    refactor to be simpler.

commit 058ef28849400111a5e11a6496c12b27ca97ea3c
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Wed Jan 9 08:42:20 2019 +0800

    [commodity-utilities] deprecate gnc-commodity-collector-contains-commodity?
    
    this function is only used once. inline it.



Summary of changes:
 .../report/report-system/commodity-utilities.scm   | 75 +++++++++++-----------
 gnucash/report/report-system/report-system.scm     |  2 +-
 gnucash/report/report-system/report-utilities.scm  |  7 +-
 3 files changed, 44 insertions(+), 40 deletions(-)