Build system update.
Added properties:
* FIRE_BREATH_ROOT which can be used to define where FireBreath root is placed (to avoid confusion with CMAKE_CURRENT_SOURCE_DIR)
* WITH_CUSTOM_BOOST - which disables building/fetching boost by FireBreath.
Fixed building plugins on mac using Unix Makefile
Additionall LDFLAGS pulled to configuration
Fixed issue with 32bit plugin silently dying when running i 64bit Safari
Minor fixes
Fixed issue #147 - possible crash on IE
Fixed issue with using log4cplus in multiple projects in the same solution

Conflicts:

	src/libs/jsoncpp/CMakeLists.txt
Removed debug msg
Merge with master from firebreath
Compilation fix + boost lookup removed.
Merge with master fixes
Removed options WITH_SYSTEM_BOOST and WITH_DYNAMIC_MSVC_RUNTIME if variables already defined
Added default param that defines additional LDFLAGS to fbgen template
Fixed generation of mac plugin bundle, when building with unix make
Merged with FB 152
Fixed crashing on IE when refreshing page containing plug-in really frequently.
Changed assertion into warning
Merge branch 'master' of git://github.com/stoiczek/FireBreath
Merge branch 'firebreath-1.6'

Conflicts:
	cmake/Mac.cmake
	src/ActiveXCore/ActiveXBrowserHost.cpp
restored assertion