lib/libcompiz_core.so (LP: #919948)
  
We do however want to install the headers. Unfortunately CMake gives you
no way to say install(TARGETS something ARCHIVE DESTINATION null) and it
always wants to install the archive. So we work around this problem with
CMake by removing the archives' INSTALL rules and simply installing the
required headers as part of compiz_core: src/CMakeLists.txt.

modules to be build interternally and statically linked to plugins and to
testcases.

Use compiz_module to add a new module, with the following directory structure:

module/
	src/
	include/
	tests/
	CMakeLists.txt

Use compiz_test_base to add a library for all tests for that module to
link to, and add each test in a separate subdirectory in tests/

Use compiz_test to add a new test in a name subdirectory for a module and
prefix.

prefix: plugin / core
module: module of functionality
test: test name

Removed compiz.h and compiz-common.h . Use core/string.h core/timer.h
core/logmessage.h core/screen.h for timeval diff functionality, CompString,
compLogMessage and wraparound modulus.

Added workaround for core xml file race condition