Added 21-capture-in-cobegin.compopts
Merge pull request #575 from vasslitvinov/add-savec-to--21-capture-in-cobegin

Added 21-capture-in-cobegin.compopts

This test has been failing occasionally in nightly testing, and I haven't been able to reproduce it.
Have it saved the generated C code so I can examine it when it does fail.