fix grass_create_location to support different locations in $GISDBASE

write on-the-fly location creation function (grass_create_location)

write grass_rm_location

write externally, compiled version with library support 

ok.	write start and stop procedures 

ok.	init module: config/*-grass.exp

ok.	write and include lib module

ok.	tie in the src and bindir variables from the global configure procedure
	into testsuite target

ok. 	command line options to runtest:
	runtest -v --srcdir . --tool grass grass.test/example.exp

write coorcnv test routine

ok.	write r_mapcalc test routine

ok. 	write test routine for all modules

ok.	write example test routine

ok. 	write r_neighbors test routine

write r_binfer test routine

ok.	write r_reclass test routine

ok.	write d_mon test routine

extend grass_switch_location

implement tests from:
- src/libes/coorcnv/test
- src/libes/coorcnv/testp
- src/libes/datetime/tests SH
- src/libes/gis/TESTS