Create a copy of a string. The copy can be freed with free() or will
be freed when then program ends.
INPUTS
str1 - Strings to duplicate
RESULT
A copy of the string which can be freed with free().
NOTES
EXAMPLE
BUGS
SEE ALSO
INTERNALS
HISTORY
10.12.1996 aros
Moved #include into first column to allow makedepend to see it.
19.10.1996 aros
Moved all ANSI C function to here and wrote all neccessary header files.
Now we have a real basis for our own C lib.
Added the functions malloc(), free() and strcasecmp()
Made all functions ANSI C compliant