v2.2.19 release candidate 2 released

[Jacques Distler]

Darwin doesn't have an EDEADLOCK error code, so compilation fails on MacOSX:

  file-lock.c:214:16: error: use of undeclared identifier 'EDEADLOCK'
                if (errno == EDEADLOCK)
                             ^
  file-lock.c:262:16: error: use of undeclared identifier 'EDEADLOCK'
                if (errno == EDEADLOCK)
                             ^
  2 errors generated.
  make[4]: *** [file-lock.lo] Error 1
  make[3]: *** [all] Error 2
  make[2]: *** [all-recursive] Error 1
  make[1]: *** [all-recursive] Error 1
  make: *** [all] Error 2
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