process overflows as high-level as possible;
introduce overflow related errors
ExpandWorkSpace should never call Error: use ErrorMessage instead,
format_putc should never release memory, causes memory corruption,
Linux does not like MAP_FIXED, it can overwrite the actual program
code.
condor: twick configure to disable readline with condor.
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git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@632 b08c6af1-5177-4d33-ba66-4b1c6b8b522a