Restore Findcppnetlib to fix Ubuntu 14.04 build (missing CMake config…

… in system package).

Does not break OSX build.

Findcppnetlib.cmake

@@ -0,0 +1,102 @@
+#
+# Copyright 2015 Grigori Chevtchenko <grigori.chevtchenko@epfl.ch>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# - Redistributions of source code must retain the above copyright notice, this
+# list of conditions and the following disclaimer.
+# - 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.
+# - Neither the name of Eyescale Software GmbH nor the names of its
+# contributors may be used to endorse or promote products derived from this
+# software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 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.
+#
+# =============================================================================
+#
+# CPPNETLIB
+#
+#==============================================================================
+# This module uses the following input variables:
+#
+# CPPNETLIB_ROOT - Path to the cpp-netlib module
+#
+# This module defines the following output variables:
+#
+# CPPNETLIB_FOUND - Was cppnetlib and all of the specified components found?
+#
+# CPPNETLIB_INCLUDE_DIRS - Where to find the headers
+#
+# CPPNETLIB_LIBRARIES - The cppnetlib libraries
+#==============================================================================
+#
+
+# Assume not found.
+set(CPPNETLIB_FOUND FALSE)
+set(CPPNETLIB_PATH)
+
+# Find headers
+find_path(CPPNETLIB_INCLUDE_DIR boost/network.hpp
+  HINTS ${CPPNETLIB_ROOT}/include $ENV{CPPNETLIB_ROOT}/include
+  ${COMMON_SOURCE_DIR}/cppnetlib ${CMAKE_SOURCE_DIR}/cppnetlib
+  /usr/local/include
+  /usr/include)
+
+if(CPPNETLIB_INCLUDE_DIR)
+    set(CPPNETLIB_PATH "${CPPNETLIB_INCLUDE_DIR}/..")
+endif()
+
+# Find dynamic libraries
+if(CPPNETLIB_PATH)
+    set(__libraries cppnetlib-client-connections
+                    cppnetlib-server-parsers
+                    cppnetlib-uri)
+
+    foreach(__library ${__libraries})
+    if(TARGET ${__library})
+      list(APPEND CPPNETLIB_LIBRARIES ${__library})
+      set(CPPNETLIB_FOUND_SUBPROJECT ON)
+    else()
+      find_library(${__library} NAMES ${__library}
+        HINTS ${CPPNETLIB_ROOT} $ENV{CPPNETLIB_ROOT}
+        PATHS ${CPPNETLIB_PATH}/lib64 ${CPPNETLIB_PATH}/lib)
+      list(APPEND CPPNETLIB_LIBRARIES ${${__library}})
+    endif()
+    endforeach()
+    mark_as_advanced(CPPNETLIB_LIBRARIES)
+endif()
+
+
+if(NOT cppnetlib_FIND_QUIETLY)
+  set(_cppnetlib_output 1)
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(cppnetlib DEFAULT_MSG
+                                  CPPNETLIB_LIBRARIES
+                                  CPPNETLIB_INCLUDE_DIR)
+
+if(CPPNETLIB_FOUND)
+  set(CPPNETLIB_INCLUDE_DIRS ${CPPNETLIB_INCLUDE_DIR})
+  if(_cppnetlib_output )
+    message(STATUS "Found cppnetlib in ${CPPNETLIB_INCLUDE_DIR}:${CPPNETLIB_LIBRARIES}")
+  endif()
+else()
+  set(CPPNETLIB_FOUND)
+  set(CPPNETLIB_INCLUDE_DIR)
+  set(CPPNETLIB_INCLUDE_DIRS)
+  set(CPPNETLIB_LIBRARIES)
+endif()