Changeset 996 for trunk/update.bat

Many revisions for handling file names with spaces using new SetEXPfile proc.
Use of directories with spaces for data files is probably not a problem, since we cd there, but EXP file names and install locations can be messy. Convert names on windows, where possible, and warn for now.

fix DISAGL window buttons for files with spaces.

cleanup MakeScrollTable?

allow ~/.gsas_config on Windows.

for use update.bat instead of building file as needed;