gnucash maint: Multiple changes pushed

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/43cb48ef (commit)
	 via  https://github.com/Gnucash/gnucash/commit/88a1d141 (commit)
	from  https://github.com/Gnucash/gnucash/commit/53b7c516 (commit)



commit 43cb48efd93c887eadd337e49f0d0b48d5e7542c
Author: John Ralls <jralls at ceridwen.us>
Date:   Fri Jan 15 10:02:11 2016 -0800

    Fix reset of PKG_CONFIG_PATH to unset variable.
    
    Apparently a cmake upstream bug.

commit 88a1d1412a31479dd9918cc707cf15172848caff
Author: RobGowin <robgowin at gmail.com>
Date:   Fri Jan 15 09:03:40 2016 -0600

    Tweak handling of COPYING file
    
    * Fix symlink to not escape local directory
    * Copy instead of link for Win32
    * Remove COPYING and INSTALL from maint branch



Summary of changes:
 CMakeLists.txt                           |  13 +
 cmake/CMakeLists.txt                     |   1 -
 cmake/COPYING                            | 674 -------------------------------
 cmake/INSTALL                            | 370 -----------------
 src/cmake_modules/GncFindPkgConfig.cmake |   4 +-
 5 files changed, 14 insertions(+), 1048 deletions(-)
 delete mode 100644 cmake/COPYING
 delete mode 100644 cmake/INSTALL