CMake: prevent mismatched package name warnings

Use all caps for the packages.

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

build/cmake/modules/FindLIBSOUP.cmake

@@ -0,0 +1,56 @@
+# - Try to find LibSoup 2.4
+# This module defines the following variables:
+#
+#  LIBSOUP_FOUND - LibSoup 2.4 was found
+#  LIBSOUP_INCLUDE_DIRS - the LibSoup 2.4 include directories
+#  LIBSOUP_LIBRARIES - link these to use LibSoup 2.4
+#
+# Copyright (C) 2012 Raphael Kubo da Costa <rakuco@webkit.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1.  Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+# 2.  Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in the
+#     documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND ITS CONTRIBUTORS ``AS
+# IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR ITS
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# LibSoup does not provide an easy way to retrieve its version other than its
+# .pc file, so we need to rely on PC_LIBSOUP_VERSION and REQUIRE the .pc file
+# to be found.
+FIND_PACKAGE(PkgConfig)
+PKG_CHECK_MODULES(PC_LIBSOUP QUIET libsoup-2.4)
+
+if(PC_LIBSOUP_FOUND)
+    FIND_PATH(LIBSOUP_INCLUDE_DIRS
+        NAMES libsoup/soup.h
+        HINTS ${PC_LIBSOUP_INCLUDEDIR}
+        ${PC_LIBSOUP_INCLUDE_DIRS}
+        PATH_SUFFIXES libsoup-2.4
+        )
+
+    FIND_LIBRARY(LIBSOUP_LIBRARIES
+        NAMES soup-2.4
+        HINTS ${PC_LIBSOUP_LIBDIR}
+        ${PC_LIBSOUP_LIBRARY_DIRS}
+        )
+endif()
+
+INCLUDE(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(LIBSOUP REQUIRED_VARS LIBSOUP_INCLUDE_DIRS LIBSOUP_LIBRARIES
+    VERSION_VAR   PC_LIBSOUP_VERSION)
+
+mark_as_advanced(LIBSOUP_LIBRARIES LIBSOUP_INCLUDE_DIRS)