Fixed several mutual exclusion problems, including a particularly nasty
one that would cause gsh to loop forever inside the memory manager. (You
could identify this one by the "BRA (-23)" at the bottom of the infinite
loop.)
Fixed the string vector print routine to properly handle all numbers of
entries in the hash table. Previously, it would always print duplicate
entries if there were < 6 commands hashed, and would sometimes print
duplicates (depending on previous contents of an internal table) for
other numbers of commands.
gsh would wait on background processes started from an exec file
(executed, not sourced). Now the exec file does not wait on the process,
but the background process is not associated with the parent shell after
the exec file terminates.
Made gsh globbing work more like csh: if none of the requested patterns
are found, print "No match" and exit.
At startup, if /etc/glogin, $HOME/glogin, or $HOME/gshrc does not exist,
don't report a "file not found" error message. (PR#100)
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