Notes for Solaris VM source generation and building
2014.04.13

Preface
	In my opinion the configuration classes need massive refactoring.
	I have created a new package 'CMakeVMMaker-Solaris' with CogSolarisConfig
	(inherits from CogUnixConfig) and subclasses CogMTSolarisConfig and
	StackSolarisConfig. But it's hard to insert these into the chain for
	generation (see PharoVMBuilder>>buildUnix32). I have also created PharoVMBuilder
	>>buildSolaris32 and PharoVMBuilder class>>buildSolaris32 but atm that is just
	a copy of >>buildUnix32.
	
	As a quick hack for Solaris source code generation I changed the existing Unix
	configuration classes that are in fact not for source code generation of Unix
	sources but Linux sources.
	
	1. Solaris needs two more external libraries (nsl and socket).
	   So I added the necessary things in CogSolarisConfig>>setExtraTargetProperties
	   and copied this to CogFamilyUnixConfig>>setExtraTargetProperties
	   
	   I also added 'lsocket' to CogFamilyUnixConfig>>linksFlags
	   But I am not sure whether this is needed.

	   Alas both changes weren't successful such that appropriate entries
	   	list(APPEND LINKLIBS nsl)
	   	list(APPEND LINKLIBS socket)
	   have been generated into CMakeLists.txt. So I did that manually after
	   generation.
	   
	2. Solaris does not have ALSA sound but Sun sound;
	   So CogSolarisConfig>>addVMDrivers: had to be adopted (also CogFamilyUnixConfig)
	   such that vm-sound-ALSA had been replaced by vm-sound-Sun and sqUnixSoundALSA by
	   sqUnixSoundSun.
	   
	3. PharoVMBuilder>>buildUnix32 has a new call to addThirdpartyLibraries:
	   with #('libssh2' 'libgit2'). This creates a problem at build time so I have
	   removed this temporarily.

	4. I had to add a 3rd parameter to the call of ctime_r() in
	   platforms/unix/vm/sqUnixMain.c (lines 918 and 945): sizeof(ctimebuf).
	   Of course this needs an appropriate #ifdef later.
	   (Note: I managed to compile this file unchanged with my first try in March;
	   I just don't know anymore what I did then to make it work...)