Unreviewed. Update OptionsGTK.cmake and NEWS for the 2.50.5 release

* Source/WebKit/gtk/NEWS: Add release notes.
* Source/cmake/OptionsGTK.cmake: Bump version numbers.

Source/WebKit/gtk/NEWS

diff --git a/Source/WebKit/gtk/NEWS b/Source/WebKit/gtk/NEWS
index 900dd2f..eb0f220 100644
--- a/Source/WebKit/gtk/NEWS
+++ b/Source/WebKit/gtk/NEWS
@@ -1,4 +1,12 @@
 ================
+WebKitGTK 2.50.5
+================
+
+What's new in WebKitGTK 2.50.5?
+
+  - Fix several crashes and rendering issues.
+
+================
 WebKitGTK 2.50.4
 ================
 

Source/cmake/OptionsGTK.cmake

diff --git a/Source/cmake/OptionsGTK.cmake b/Source/cmake/OptionsGTK.cmake
index dce9786..f5f131a 100644
--- a/Source/cmake/OptionsGTK.cmake
+++ b/Source/cmake/OptionsGTK.cmake
@@ -3,7 +3,7 @@
 
 WEBKIT_OPTION_BEGIN()
 
-SET_PROJECT_VERSION(2 50 4)
+SET_PROJECT_VERSION(2 50 5)
 
 set(USER_AGENT_BRANDING "" CACHE STRING "Branding to add to user agent string")
 
@@ -211,14 +211,14 @@
 EXPOSE_STRING_VARIABLE_TO_BUILD(WEBKITGTK_API_VERSION)
 
 if (WEBKITGTK_API_VERSION VERSION_EQUAL "4.0")
-    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(WEBKIT 111 7 74)
-    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(JAVASCRIPTCORE 46 9 28)
+    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(WEBKIT 111 8 74)
+    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(JAVASCRIPTCORE 46 10 28)
 elseif (WEBKITGTK_API_VERSION VERSION_EQUAL "4.1")
-    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(WEBKIT 19 7 19)
-    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(JAVASCRIPTCORE 9 9 9)
+    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(WEBKIT 19 8 19)
+    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(JAVASCRIPTCORE 9 10 9)
 elseif (WEBKITGTK_API_VERSION VERSION_EQUAL "6.0")
-    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(WEBKIT 17 7 13)
-    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(JAVASCRIPTCORE 7 9 6)
+    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(WEBKIT 17 8 13)
+    CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(JAVASCRIPTCORE 7 10 6)
 else ()
     message(FATAL_ERROR "Unhandled API version")
 endif ()