Update dependencies for 3.901 release.

CMakeLists.txt

@@ -193,13 +193,13 @@ if (NOT PKG_CONFIG_FOUND)
  endif()
 
 # glib et al.
-pkg_check_modules (GLIB2 REQUIRED glib-2.0>=2.40)
+pkg_check_modules (GLIB2 REQUIRED glib-2.0>=2.56.1)
 pkg_check_modules (GIO REQUIRED gio-2.0)
-pkg_check_modules (GOBJECT REQUIRED gobject-2.0>=2.20)
-pkg_check_modules (GMODULE REQUIRED gmodule-2.0>=2.20)
-pkg_check_modules (GTHREAD REQUIRED gthread-2.0>=2.20)
+pkg_check_modules (GOBJECT REQUIRED gobject-2.0)
+pkg_check_modules (GMODULE REQUIRED gmodule-2.0)
+pkg_check_modules (GTHREAD REQUIRED gthread-2.0)
 
-pkg_check_modules (LIBXML2 REQUIRED libxml-2.0>=2.7.0)
+pkg_check_modules (LIBXML2 REQUIRED libxml-2.0>=2.9.4)
 pkg_check_modules (LIBXSLT REQUIRED libxslt)
 if (WITH_GNUCASH)
   if (WIN32 OR APPLE)
@@ -210,7 +210,7 @@ if (WITH_GNUCASH)
     set(WEBKIT2 1 CACHE INTERNAL "WebKit2Gtk4")
   endif()
 
-  pkg_check_modules (GTK3 REQUIRED IMPORTED_TARGET gtk+-3.0>=3.18.0)
+  pkg_check_modules (GTK3 REQUIRED IMPORTED_TARGET gtk+-3.0>=3.22.30)
 endif()
 
 pkg_check_modules (ZLIB REQUIRED zlib)

README.dependencies

@@ -30,11 +30,6 @@ not actively eradicated.
   GnuCash uses variadic macros for debugging and logging support (via
 qof).
 
-  Declarations after Code
-  -----------------------
-
-  The use of declarations after code (`int i; i = 0; char *foo;') is
-strongly discouraged and actively removed whenever it's caught.
 
 
 Important notice
@@ -60,12 +55,14 @@ Libraries/Deps
   --------              _______
   gcc or clang          8.0 (gcc)/6.0(clang)    C++17 C/C++ compiler
   cmake                 3.10                    Build system manager
-  glib2                 2.40.0
-  gtk+3                 3.14.0
-  guile                 2.2.0 or 2.0.0          Must be built with regex
+  glib2                 2.56.1
+  gtk+3                 3.22.30
+  guile                 2.2.0 or 2.0.9          Must be built with regex
                                                 support enabled
-  libxml2               2.5.10
-  gettext               0.20
+  libxml2               2.9.4
+  gettext               0.20                    Required to build gnucash.pot,
+                                                0.19.6 or later permitted but
+                                                won't generate gnucash.pot.
   libxslt, including xsltproc
   ICU                                           International Components for
                                                 Unicode
@@ -80,26 +77,33 @@ Libraries/Deps
                                                 have patched earlier versions
                                                 to work.
   swig                  3.0.12                  Makes Guile and Python Bindings.
-  webkit                webkitgtk-3.0 (Windows, Mac)
-                        webkit2gtk-3.0 (Everything Else)
+  webkit                2.4.11 (Windows,
+                        2.14.1 (Everything Else)
   googletest            1.8.0                   Some distros call it gtest.
                                                 Some distros also separate out
                                                 googlemock or gmock; both are
                                                 required.
 
-  optional
-  --------
-  aqbanking             5.3.4                    online banking; also requires
-                                                 gwenhywfar.
-
   libdbi                0.8.3                    SQL backend; also requires at
                                                  least one of libdbd-sqlite3,
                                                  libdbd-mysql, or libdbd-pgsql
 
-  libofx                0.9.0                    OFX/QFX import
+  zlib
 
-  python                3.2.0                    python bindings; headers
+  optional
+  --------
+  aqbanking             5.7.8                    online banking; Note that 6.1.0
+  gwenhywfar            4.20.0                   or higher is needed for German
+                                                 FinTS.
+
+  python                3.6.0                    python bindings; headers
                                                  required, not just binaries.
+  libofx                0.9.12                   OFX/QFX import
+
+  libsecret             0.18
+  gtk-mac-integration                            MacOS only, for menus to go
+                                                 to the main menu bar instead
+                                                 of one on the window.
 
   makeinfo                                       Not really needed, it
                                                  just builds the