Trimmed trailing white space.
Bug fix for option -lower-

Option -lower- may now be specified. Previously this resulted in an
error message.

There is now also an informative error message if options -lower- and
-upper- are both specified.
Bug fix for option -trim-

Previously, option -trim- would always result in an error message.
Fixed error message.

There is now an informative error message if a variable specified to
option -t1vars()-, -t2vars()-, or -t3vars()- is numeric in one dataset
and string in the other.
Changed the help file extension to .sthlp.
Added .gitignore file.
Added cscript.ado.

It is a copy of the StataCorp command:
*! version 3.6.0  04mar2013
Renamed cscript.ado as cscript_bcstats.ado.
Trimmed trailing white space from -cscript_bcstats-.
Added data for cscript test 1.
Added data for cscript test 2.
Fixed the program name in cscript_bcstats.ado.
-cscript_bcstats- does not drop select globals.
New -bcimport- converts test text data to .dta
Added .gitignore file for the cscript.
Initial version of cscript

Includes basic tests of the string comparison options and option
-nolabel-. It also includes the help file example.
Bug fix for -nolabel-

-nolabel- would result in an error if no variables were specified to
-keepsurvey()- or -keepbc()- or if the variables were not numeric.
Merge branch 'cscript' into develop
Removed superfluous space.
varnames and varlists are correctly expanded.

The strings specified to options that take a varname or varlist are now
immediately expanded.

Solves #1.