Don't use a cache of variable name to value mappings on Win32, as that

Don't use a cache of variable name to value mappings on Win32, as that

2003-08-10  Tor Lillqvist  <tml@iki.fi>

	* glib/gutils.c (g_getenv): Don't use a cache of variable name to
	value mappings on Win32, as that breaks g_setenv() and
	g_unsetenv(). Only call ExpandEnvironmentStrings() if necessary,
	and in that case return a quarkified string. It is still
	questionable how necessary expanding embedded environment variable
	references is. Possibly the whole Win32-specific g_getenv()
	implementation could be removed. (#119520)