CMake: prevent mismatched package name warnings

Use all caps for the packages.

Closes https://github.com/wxWidgets/wxWidgets/pull/1886

build/cmake/modules/FindWEBKIT2.cmake

@@ -0,0 +1,37 @@
+# - Find Webkit2
+# Find the Webkit2 includes and library
+#
+#  WEBKIT2_INCLUDE_DIR - Where to find Webkit2 include sub-directory.
+#  WEBKIT2_LIBRARIES   - List of libraries when using Webkit2.
+#  WEBKIT2_FOUND       - True if Webkit2 found.
+
+SET( WEBKIT2_VERSION 4.0)
+
+set(WEBKIT2_INCLUDE_DIR WEBKIT2_INCLUDE_DIR-NOTFOUND)
+set(WEBKIT2_LIBRARY WEBKIT2_LIBRARY-NOTFOUND)
+set(WEBKIT2_LIBRARIES WEBKIT2_LIBRARIES-NOTFOUND)
+
+FIND_PATH(WEBKIT2_INCLUDE_DIR webkit2/webkit2.h
+    PATH_SUFFIXES "webkitgtk-${WEBKIT2_VERSION}"
+)
+
+SET(WEBKIT2_NAMES "webkit2gtk-${WEBKIT2_VERSION}")
+FIND_LIBRARY(WEBKIT2_LIBRARY
+    NAMES ${WEBKIT2_NAMES}
+)
+
+# Handle the QUIETLY and REQUIRED arguments and set WEBKIT2_FOUND to
+# TRUE if all listed variables are TRUE.
+INCLUDE(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(
+    WEBKIT2 DEFAULT_MSG
+    WEBKIT2_LIBRARY WEBKIT2_INCLUDE_DIR
+)
+
+IF(WEBKIT2_FOUND)
+    SET( WEBKIT2_LIBRARIES ${WEBKIT2_LIBRARY} )
+ELSE(WEBKIT2_FOUND)
+    SET( WEBKIT2_LIBRARIES )
+ENDIF(WEBKIT2_FOUND)
+
+MARK_AS_ADVANCED(WEBKIT2_LIBRARY WEBKIT2_LIBRARIES WEBKIT2_INCLUDE_DIR)