Closing open files that are left open

SW_SoilWater.c
	06/26/2013	(rjm)	closed open files at end of functions SW_SWC_read(),
_read_hist() or if LogError() with LOGFATAL is called
SW_VegEstab.c
 	06/26/2013	(rjm)	closed open files in function SW_VES_read() or if
LogError() with LOGFATAL is called in _read_spp()
SW_Markov.c
 	06/27/2013	(drs)	closed open files if LogError() with LOGFATAL is
called in SW_MKV_read_prob(), SW_MKV_read_cov()
SW_Model.c
 	06/27/2013	(drs)	closed open files if LogError() with LOGFATAL is
called in SW_MDL_read()
SW_Output.c
 	06/27/2013	(drs)	closed open files if LogError() with LOGFATAL is
called in SW_OUT_read()
SW_Site.c
 	06/27/2013	(drs)	closed open files if LogError() with LOGFATAL is
called in SW_SIT_read(), _read_layers()
SW_Sky.c
 	06/27/2013	(drs)	closed open files if LogError() with LOGFATAL is
called in SW_SKY_read()
SW_VegProd.c
 	06/27/2013	(drs)	closed open files if LogError() with LOGFATAL is
called in SW_VPD_read()
SW_Weather.c
 	06/27/2013	(drs)	closed open files if LogError() with LOGFATAL is
called in SW_WTH_read(), _read_hist()