updateCustomEnv.solo needs to use truncate when doing a remove key .. otherwise cruft can be left at end of customenv file

[dalehenrich]

bosch:battery_i>updateCustomEnv.solo --removeKey=GDK_stones_projects
bosch:battery_i>cat customenv 
export stone_dir=/bosch1/users/dhenrich/_stones/37x/stones/battery_i
export ROWAN_PROJECTS_HOME=/bosch1/users/dhenrich/_stones/37x/i_37x_externals_st
export STONES_DATA_HOME=/bosch1/users/dhenrich/gsdevkit_stones_REGISTRY
export GEMSTONE=/bosch1/users/dhenrich/_stones/37x/i_37x/noop50/gs/product
ISTRY
export GEMSTONE=/bosch1/users/dhenrich/_stones/37x/i_37x/noop50/gs/product
product

ISTRY and duplicate export GEMSTONE=/bosch1/users/dhenrich/_stones/37x/i_37x/noop50/gs/product and product at end are the evidence

[dalehenrich]

Here's the registry entry which is the correct reference:

        #stoneDirectorySpec : GDKrowanStoneDirectorySpec {
                #name : 'minimal_rowan3',
                #dbfSource : '$GEMSTONE/bin/extent0.rowan3.dbf',
                #bin : 'bin',
                #logs : 'logs',
                #netldiPort : 33431,
                #customenv : {
                        'stone_dir' : '/bosch1/users/dhenrich/_stones/37x/stones/battery_i',
                        'ROWAN_PROJECTS_HOME' : '/bosch1/users/dhenrich/_stones/37x/i_37x_externals_st',
                        'STONES_DATA_HOME' : '/bosch1/users/dhenrich/gsdevkit_stones_REGISTRY',
                        'GEMSTONE' : '/bosch1/users/dhenrich/_stones/37x/i_37x/noop50/gs/product'
                },
                #userId : 'SystemUser'
        },