Simplify usage by allow to omit the JULIA_DEPOT_PATH #50
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Before, one always had to start programs with
JULIA_DEPOT_PATH=path myprogwhen running a programmyprogthat links tolibtrixi. With this PR, settingJULIA_DEPOT_PATHbecomes unnecessary as long as the default depot location used by byutils/libtrixi-init-juliais left untouched.This should help to avoid user errors in case they forget to set the Julia depot path appropriately. If a
JULIA_DEPOT_PATHenvironment variable is set, it will honored, thus the user can still provide non-standard locations via the environment. Overriding the default is also possible by callingtrixi_initializewith a second, non-null argument.