inputs/GBIF/run: inherit from lib/runscripts/datasrc_dir.run, which uses import_order.txt to forward calls to the subdirs

added blank runscripts inputs/GBIF/Source/run, Specimen/run because they are in import_order.txt (used by lib/runscripts/datasrc_dir.run)

bugfix: bin/make: do not alter the PATH passed to the invoked make command, since this is a general-purpose wrapper and is not linked to a specific working copy (it could be used to wrap any make invocation, not just for commands in the svn dir). this uses lib/sh/local.sh's new PATH_add= flag.

lib/sh/local.sh: added PATH_add= flag to allow turning off the addition of $bin_dir_abs to the PATH. this is useful for wrapper scripts that should not alter the PATH passed to their invoked command.

bugfix: lib/sh/make.sh: make(): invoke only the system make command instead of any wrapper for it in the PATH (by using self_sys instead of self), to prevent infinite recursion. single recursion is resolved by nonrecursive=1, but there are cases where mutual recursion occurs due to the presence of two, different bin/makes in the PATH (e.g. if you have two working copies with bin/make, and one is symlinked in your ~/bin/ folder), and these cases can only be resolved by clearing out the PATH completely (since the bin/makes do not know of each other's existence, in order to remove their parent dirs from the PATH).

lib/sh/util.sh: self_sys alias: use new sys_cmd() instead of `command -p` so that only the command path resolution is performed with a limited PATH, and the invoked command itself inherits the full PATH

lib/sh/util.sh: added sys_cmd(), which runs a system command and allows running a system command of the same name as the script

lib/sh/util.sh: added echo_builtin()

inputs/.rsync_ignore: test*.xml: turn on syncing again, but always treat the local side of the sync (starscream or vegbiendev) as the authoritative copy since they are the machines the tests can be run on

/.rsync_ignore: temp files: hide them on upload so that they are never synced to jupiter. hiding is different than unidirectionally exclude'ing them, because it also causes them to be deleted on the destination if they were uploaded in previous syncs.