current git tree failed to compile

[Masanari Iida]

current git tree (HEAD 05890217fdc) failed to compile
on Fedora 18 (x86).

 CXX      stap-tapset-method.o
  CXX      stap-translator-output.o
make[2]: *** No rule to make target `re2c-migrate/stapregex.cxx',
needed by `stap-stapregex.o'.  Stop.
make[2]: Leaving directory `/home/iida/Repo/systemtap'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/iida/Repo/systemtap'
make: *** [all] Error 2

This symptom started after series of stapregex commits were posted.

Regards,
Masanari