[devhelp/wip/webkit-font-size: 54/54] build: require WebKitGTK+ >= 2.19.2

[Sébastien Wilmet <swilmet src gnome org>]

commit 973242b8e02409ea7a10ac5807373c8b2e5ecb24
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri Nov 24 12:47:35 2017 +0100

    build: require WebKitGTK+ >= 2.19.2
    
    See the previous commit, configure.ac is modified in a seprate commit
    because if the meson branch is merged this will cause a conflict.

 README       |    2 +-
 configure.ac |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/README b/README
index 749056d..4b1ae1e 100644
--- a/README
+++ b/README
@@ -8,7 +8,7 @@ The Devhelp web page:
 Dependencies:
 - glib >= 2.38
 - gtk+ >= 3.22
-- webkit2gtk-4.0 >= 2.6
+- webkit2gtk-4.0 >= 2.19.2
 - gsettings-desktop-schemas
 
 Devhelp's primary goal is to be an API documentation browser for
diff --git a/configure.ac b/configure.ac
index 5927ebe..3e37e80 100644
--- a/configure.ac
+++ b/configure.ac
@@ -58,7 +58,7 @@ LT_LIB_M
 
 AX_REQUIRE_DEFINED([AX_PKG_CHECK_MODULES])
 AX_PKG_CHECK_MODULES([DEVHELP],
-                    [gio-2.0 >= 2.38  gtk+-3.0 >= 3.22  webkit2gtk-4.0 >= 2.6],
+                    [gio-2.0 >= 2.38  gtk+-3.0 >= 3.22  webkit2gtk-4.0 >= 2.19.2],
                     [gsettings-desktop-schemas])
 
 # i18n stuff