Adapt OpenSync build environment for CMake 2.6.0

dani@sugga:~/projects/opensync/opensync/build> cmake ../
-- WARNING: you are using the obsolete 'PKGCONFIG' macro use FindPkgConfig
-- Found Python: /usr/lib/python2.5/config/libpython2.5.a
CMake Warning (dev) at opensync/CMakeLists.txt:127 (ADD_DEFINITIONS):
  Policy CMP0005 is not set: Preprocessor definition values are now escaped
  automatically.  Run "cmake --help-policy CMP0005" for policy details.  Use
  the cmake_policy command to set the policy and suppress this warning.
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Configuring done
CMake Warning (dev) at opensync/CMakeLists.txt:126 (ADD_EXECUTABLE):
  Policy CMP0003 should be set before this line.  Add code such as

    if(COMMAND cmake_policy)
      cmake_policy(SET CMP0003 NEW)
    endif(COMMAND cmake_policy)

  as early as possible but after the most recent call to
  cmake_minimum_required or cmake_policy(VERSION).  This warning appears
  because target "osplugin" links to some libraries for which the linker must
  search:

    glib-2.0, gthread-2.0, rt, gmodule-2.0, dl, glib-2.0, gthread-2.0, rt
    gmodule-2.0, dl, xml2, exslt, xslt, z, m, gcrypt, gpg-error, xml2, exslt
    xslt, z, m, gcrypt, gpg-error, sqlite3, glib-2.0

  and other libraries with known full path:

    /home/dani/projects/opensync/opensync/build/opensync/libopensync.so.1.0.0

  CMake is adding directories in the second list to the linker search path in
  case they are needed to find libraries from the first list (for backwards
  compatibility with CMake 2.4).  Set policy CMP0003 to OLD or NEW to enable
  or disable this behavior explicitly.  Run "cmake --help-policy CMP0003" for
  more information.
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Generating done
-- Build files have been written to: /home/dani/projects/opensync/opensync/build
dani@sugga:~/projects/opensync/opensync/build> 

Fixed in r3427 and r3429.

Only a minor warning left

-- WARNING: you are using the obsolete 'PKGCONFIG' macro use FindPkgConfig

We have to change all Find cmake files to use FindPkgConfig? instead of PKGCONFIG. Currently these files are using PKGCONFIG:

modules/FindLibGlade.cmake:20:	PKGCONFIG( libglade-2.0 _libglade_include_DIR _libglade_link_DIR _libglade_link_FLAGS _libglade_cflags )
modules/FindGNOKII.cmake:19:	PKGCONFIG( gnokii _gnokii_include_DIR _gnokii_link_DIR _gnokii_link_FLAGS _gnokii_cflags )
modules/FindPilotLink.cmake:19:	PKGCONFIG( pilot-link _pilotlink_include_DIR _pilotlink_link_DIR _pilotlink_link_FLAGS _pilotlink_cflags )
modules/FindSqlite.cmake:16:   PKGCONFIG( sqlite3 _LibSQLITEIncDir _LibSQLITELinkDir _LibSQLITELinkFlags _LibSQLITECflags )

Fixed in r3475