gnucash-on-windows master: Add WebKitGtk package files, build instructions.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash-on-windows/commit/dd8fa694 (commit)
	from  https://github.com/Gnucash/gnucash-on-windows/commit/318ff4ac (commit)



commit dd8fa69437b76d05ef7e134f8f1f6b18c7621789
Author: John Ralls <jralls at ceridwen.us>
Date:   Thu May 28 13:13:11 2020 -0700

    Add WebKitGtk package files, build instructions.
    
    WebKitGtk is no longer supported by MSYS2 so we must package it ourselves.



Summary of changes:
 dependencies/README.md                             |  19 +
 ...p-dummy-HeapStatistics-implementation.all.patch |  29 ++
 ...printf-format-atribute-to-gnu_printf-.all.patch |  68 ++++
 .../mingw-w64-webkitgtk/0022-gl-casts.patch        |  11 +
 .../0101-webkitgtk-2.4.3-gcc-asm.all.patch         |  26 ++
 .../0102-fix-build-with-icu-59.1.patch             | 396 +++++++++++++++++++++
 .../mingw-w64-webkitgtk/0103-SingleThread.patch    |  13 +
 .../0104-Fix-for-FORTIFY_SOURCE.patch              |  13 +
 .../0200-fix-build-with-StuctureInlines.h.patch    |  70 ++++
 ...-fix-build-WebKitTestRunnerGNUMakefile.am.patch |  15 +
 .../0202-fix-trailing-semi-on-macro.patch          |  37 ++
 dependencies/mingw-w64-webkitgtk/PKGBUILD          | 175 +++++++++
 dependencies/mingw-w64-webkitgtk/enchant-2.x.patch |  22 ++
 .../mingw-w64-webkitgtk/webkitgtk-2.4.9-abs.patch  |  26 ++
 14 files changed, 920 insertions(+)
 create mode 100644 dependencies/README.md
 create mode 100644 dependencies/mingw-w64-webkitgtk/0020-W32-Fixup-dummy-HeapStatistics-implementation.all.patch
 create mode 100644 dependencies/mingw-w64-webkitgtk/0021-W32-Change-printf-format-atribute-to-gnu_printf-.all.patch
 create mode 100644 dependencies/mingw-w64-webkitgtk/0022-gl-casts.patch
 create mode 100644 dependencies/mingw-w64-webkitgtk/0101-webkitgtk-2.4.3-gcc-asm.all.patch
 create mode 100644 dependencies/mingw-w64-webkitgtk/0102-fix-build-with-icu-59.1.patch
 create mode 100644 dependencies/mingw-w64-webkitgtk/0103-SingleThread.patch
 create mode 100644 dependencies/mingw-w64-webkitgtk/0104-Fix-for-FORTIFY_SOURCE.patch
 create mode 100644 dependencies/mingw-w64-webkitgtk/0200-fix-build-with-StuctureInlines.h.patch
 create mode 100644 dependencies/mingw-w64-webkitgtk/0201-fix-build-WebKitTestRunnerGNUMakefile.am.patch
 create mode 100644 dependencies/mingw-w64-webkitgtk/0202-fix-trailing-semi-on-macro.patch
 create mode 100644 dependencies/mingw-w64-webkitgtk/PKGBUILD
 create mode 100644 dependencies/mingw-w64-webkitgtk/enchant-2.x.patch
 create mode 100644 dependencies/mingw-w64-webkitgtk/webkitgtk-2.4.9-abs.patch